Lambretta jetting guide. Float Valve 200 minimum Choke Jet 50 Mixture screw 2.

Lambretta jetting guide. 6 mm Lambretta Carburettor. hope this helps cheers Jeff. Jan 11, 2017 · So the first thing to do was to set a base parameter — what is a commonly accepted figure for a standard 200cc Lambretta engine? I know from numerous tests on my own dyno that a standard 200cc Lambretta engine with clubman pipe, 22mm carb and an airbox will produce pretty much 9hp at the back wheel every time with only very minor variations between engines. 3 Use on extended distance hard riding to cool the motor/enrichen. Main Jet – 68 MK III Part No 00412100 – LD125; Main Jet – 72 for MK 1 LD150; Main Jet – 75 for MK II & III Part No 00412017 – LD150 . I’ve used the Finally, a badge was mounted on the frame behind the seat which said "Lambretta. 7. Jun 4, 2013 · Lights were dim so I need to double check all the ground connections. CAMBRIDGE LAMBRETTA set up instructions for the Scuderia Veloce 195 cylinder kits. 5 turns out. First we show you the basic principles how the carb works and what part on your carb does what. I am running a stage 4 SIL, 48 mm AF Clubman, Jap con rod, 3mm spacer and modified AF Rayspeed crank. A scooter jetted perfectly for thrashing down the motorway will run rich around town, so you might need to alter your jetting from time to time depending on use, if you want a perfect set up. 5 turns out Starting point for jetting Dellorto VHSB 34LD Slide – standard 40 Needle K21 or K24 Needle jet (atomiser) DP266 / DP267 Main Jet 175 to 190 Pilot Jet 45 to 55. Has anyone got a similar set up and please include air filter. 2. Feb 11, 2021 · This is the jetting on my GT186 back in 2012/13. This All early models including A, B, C, LC, D, LD, E & F run SEA30 in their gearbox. GP200 jetting set up already fitted, comes with an extra GP150 slide and atomiser. LAMBRETTA JETTING 2 This is a small guide to get the jetting of the carb on your Lambretta right. Step 1: DETERMINE THE CORRECT NEEDLE AND OR NEEDLE JET. question regards jetting etc, having just rebuilt my 1965 TV175 motor using a RT195 top end and numerous other expensive parts, I've also added a Dellorto PHBH 30mm carb & having difficulties jetting/tuning it in. Jetting & setting-up RECOMMENDATIONS for Casa Performance SS200 + SS225 + SS250 kits LAST UPDATED 21. Learn the basics of how a PWK Flat sli introduction to the mb scooters lambretta tech-site MB’s Tech – Site is written with over 40+ years experience by Mark Broadhurst. 0 – 2. The throttle cable inner and outer will need to be Please note that the sizes mentioned here are based on the general sizing guidelines and may vary depending on the specific style and material of the garment Nov 16, 2015 · Choke jet 70. These cowls were only fitted on SX 200's and are unlike those on any other Lambretta model. This month, back to the clubman! The ever-popular clubman, tested against current expansion pipes. Atomiser AV266. Jetting of your scooter is a happy medium, which ever carb you choose. Ignition curves can be tweaked and pushed backwards/forwards throughout the RPM range in the pursuit of power. Jun 27, 2018 · This Group is for all interested in the ownership and promotion of the Lambretta marque in the Bristol,surrounding area and further afield. LAMBRETTA JETTING 2 This is a small guide to get the jetting of the carb on your Lambretta right. Please post with respect and tolerance try and keep posts Jul 31, 2017 · After blueprinting and setting up a standard Lambretta engine, Darrell Taylor embarked upon a series of experiments to see what power could reasonably be attained from step-by-steo tuning of a SIL200 engine. Everywhere you go in the world, you will recognize our distinguished DNA, born from Italian heritage. Pilot 53. Starting from the pilot system to the Needle system and finally the Mains. varitronic ignition Dellorto PHBH 26 carburettor Main 104 Pilot 48 Atomiser AV 266 Needle X7 second clip Slide 40 Choke 70 Jan 27, 2021 · I am after a guide that would help you jetting a carb from scratch on a non standard engine. Taylor Tuning Contact details: Taylor Tuning on Facebook MAIN JET: The main jet affects the jetting in the upper quarter of the throttle position. LAMBRETTA X300 lambretta x series neo mod style milano THE NEO MOD A […] Feb 4, 2019 · Information about Dell'Orto tuning is freely available in pdf form on t'internet & therein lies good explanations of how best to select the sizes. Regular selection of New and Used scooters available. part 4. Condition: Motor running and main jet out. Choke jet is 50. • X-SERIES • HERITAGE TO FUTURE X SERIES We honour our rich history by prolonguing our iconic designs into the future. Many of the bolt on kits may already come with a state of tune straight out of the box, but they still could be tuned and improved upon in most cases depending on what you are trying to achieve. by DaveTomo » Wed Jun 04, 2014 6:26 pm . Sep 17, 2018 · 118-122 Main Jet 70 choke 40 slide 50-52 pilot jet AV266 Atomiser X7 needle on 2nd clip from top This is just a loose guide. 3. Do not fit an inline fuel filter. Jetting & setting-up RECOMMENDATIONS for Casa Performance SS200 + SS225 kits For the SS225 (+ ‘SS225 Lydden Hill Replica’ Version): Carburettor : Dell’Orto VHSB 34LD (34mm) Atomiser : DQ274 Main Jet : 175 – 180 Idle Jet : 61-64 Idle jet diffusor (this is found under the idle jet) : CD1 Slide : 50 Needle : K24 (1st position from the top) Apr 24, 2014 · Hi all, the purpose of this thread is twofold; firstly i need all the advice i can get on tuning my barrel, but i also want this thread to act as a bit of a guide should anyone else be interested in undertaking such work; therefore if all replies could be over explained so anyone who is new to this can follow and understand the process that would be much appreciated. Cheers and hope this helps, Rich' DellOrto SH22 Originally fitted to the most powerful factory Lambrettas, the GP150 and GP200, the SH22 still is a great work horse for some. First we show you the basic principles. Cheers and hope this helps, Rich' May 21, 2022 · The carburetor is a fundamental part of a internal combustion engine which you don't have to be a wizard to understand. Carb needs to be dialed in, cylinder run-in, possible jetting changed, cables adjusted after they stretch a bit, flywheel cover installed, licensed, lubed, screwed, tattooed, etc, etc, etc. Perfect copy of the Dellorto SH22/2 carb. Also I don't recall seeing anyone using X4 needle which I assume is leaner than X2 but nowhere near X7/X13 which seem to be most commonly used. N. To take a standard Lambretta engine, upgrade it with a bolt on cylinder kit, new carb, exhaust, electronic igntion etc is a relativly easy way to increase power and thus speed. All set up using gas analysis, and I have tweaked the settings down a little from when I left SRP race tech as was still slightly rich but at the time of tuning the smallest pilot I had was a 32 and main of 108. Jul 12, 2017 · Carb kit bgm PRO 195-225 cc Lambretta - Ø=30mm Polini Carb kit bgm PRO 195-225 cc Lambretta - Ø=24mm Polini 18 * KG – M 2. Whilst bigger may be safer, it is not necessarily better, particularly with the atomiser which should be just big enough to allow running (albeit rich!) with no main jet fitted. Please note carburettor jetting for the standard Lambretta carburettors are already in the Workshop Section for standard carbs. We have a mini guide on the history of the Innocenti factory, as well as the scooters and three wheeled vehicles it produced. Nov 15, 2016 · 1 To help set up jetting. All jetting and settings contained within these pages are for your guidance only and should be considered as base settings for you to start with, whereby you would continue to try to find the correct settings. Can you give me a rough guide on its carb jetting etcwould the jetting be the same as 30mm dellorto? many thanks Allan. Written and compiled by Ken Herlingshaw. 5 to 3. I can see this as the size of the cutaway is smaller on the 5914-1 The rings can open and catch on the left and right at the top of the inlet port, we suggest the use of a small blunt screwdriver to push the ring down to guide it into the bore - NEVER FORCE ANY PARTS - Suggested jetting details are below for the running in period. Smart booster fitting instructions. There have over the years been a number of carbs used with Lambretta tuning. Scooter Model Carb Type Main Slow Running Air Mixer Tube Starter : PX150E (2005 US version) Ignition - Compression - Jetting - Exhaust: A simplified guide for Lambretta & Vespa scooters. 25mm not the 0. The carb runs a 48 pilot jet and a 132 main jet,the plug colour is chocolate brown and the scooter runs really well. Mixture screw 2. You've quite a few options as regards running it through the airbox or with a filter,maybe a breathe sweet or open mouthed. LAMBRETTA JETTING. Jetting help please 30mm OKO PWK. Sep 24, 2017 · Hi , I've just built a ts1 and I'm running it on a bgm box pipe , And a 30mm phbh , timming set at 19°, I was advised to set Carb at 140 main , x7 second clip , av268 , and 55,Pilot This section is a practical guide to fault finding, although it is not fully comprehensive it does cover the majority of problems that we have encountered over the years. At the very top of each page you can see our sticky menu. Jetting is pretty simple as there are not a whole host of different jets to choose from. CAMBRIDGE LAMBRETTA set up instructions for Imola 186 / 198 and Monza 200! Imola 186 / 198 & Monza 200 Kits These instructions are based on the latest version of the kit, using a 58mm stroke crankshaft with 107mm rod (i. 5-3. SH standard Lambretta Carbs Many mechanics attempt to "chase" tuning by changing spark plug heat ranges; The real answer is to adjust jetting or air/fuel mixtures in an effort to put more air back into the en-gine; Types of Abnormal Combustion. The basic princi- ples work on all 2 stroke engines with a carb though. e. With our large walk in shop , restructure and move of our business in 2012 we are now MB Scooters Ltd (ex MB Developments). Starting point for jetting Dellorto VHSB 34LD. Float Valve 200 minimum Choke Jet 50 Mixture screw 2. FITTING MBgm RACE -TOUR 195/200 – 225/230 These are a quicker simplified fitting instructions for the new MBgm Race-Tour 65mm 195-200cc and 70mm 225-230cc cylinder kits. ALWAYS do several plug chops at all throttle openings. The table is a guide to Innocenti recomendations as to factory jetting specs. I have a Casa 185 top end with a Scootopia SH2/22 and a Scootopia Ancillotti type clubman. It is important to check the spark plug regularly to insure the jetting is correct. Now the pure Lambretta and Vespa street racer came to the forefront. ½ a litre will be adequate. Just in the case you don’t know already. Expansion System and Gearbox LAMBRETTA JETTING 2 This is a small guide to get the jetting of the carb on your Lambretta right. Please dont forget as with any modifications, changes in the machine over the years will affect jetting. Needle jets are available in an assortment of sizes for most of the Mikuni round-slide and flat-slide carburetors. My first thoughts before I start fitting and testing are that the main jet seems small. With the scooter on its stand, set your air mix screw by screwing it in all the way, and then screw it out one and a half turns. Slide – standard. This jetting is not suitable for running with an air filter. I would suspect that the mid range would be fine. e carb,cables Nov 17, 2017 · Companies began investing heavily and the introduction of the TS1 cylinder kit for the Lambretta and the T5 Vespa by Piaggio took the tuning scene in a new direction. The Lambretta Manual of Performance Tuning and Conversions. Once you have covered this, your jetting can be checked and adjusted if need be. Ancillote exhaust. Owners were prepared to blow huge budgets and their stunning creations took these machines to a new level. already. Coming into play at ¾ throttle on through to wide open throttle. lambretta scooter ~ scooter restorations ~ lambretta spare parts ~ lambretta repairs ~ casa lambretta ~ casa performance ~ spitfire tool company ~ lambretta restorations ~ lambretta engine rebuild ~ lambretta tuning ~ scooter parts ~ buy lambretta parts ~ lambretta dealer london ~ lambretta scooter uk ~ flywheel remagnetizing service ~ lambretta ld 125 ~ lambretta ld 150 ~ lambretta d 125 afternoon. Jun 4, 2014 · Board index ‹ Lambretta Help AF Rayspeed jetting guide - Jetex,Dellorto & Amal. You need to also read elsewhere In depth cylinder fitting instructions bgm’s fitting instruction Setting squish clearance Setting up an engine and carburation Setting up ignitions Setting up packing plates You can read the Jan 26, 2021 · Overview: Max Quattrini is well known for his Vespa tuning kits, this being his first entry to the Lambretta tuning market. Setting your tick over - Pilot jet and air mix screw. December 6, 2013. The pilot jet is used through the whole rev range, so if you fit a smaller one, you may need to increase the size of your main jet to compensate. Once all the cables and wiring loom are in position, remove the plastic cable ties and fit the correct factory type aluminium straps. The Needle Jet and Jet Needle The needle jet and jet needle regulate fuel delivery throughout the mid-range. Needle K21 or K24 2nd clip from top. Main Jet 168 - 172 Pilot Jet 45 to 55. One step forward and two steps back Jun 28, 2020 · Ignition - Compression - Jetting - Exhaust: A simplified guide for Lambretta & Vespa scooters Ignition curves can be tweaked and pushed backwards/forwards throughout the RPM range in the pursuit of rayspeed used to publish a ball park jet settings on their site,its gone now but here is their recommendation for a rapido race 225 with an expansion pipe and 30mm round slide delorto carb-main jet128,slide 30-40 deg,av 266 attomise/needle jet,x7 needle 2nd clip from top,55 pilot,70 choke and mixture screw 2. Well, understand to the best of my ability that is. 2019 SS200: Carburettor : Dell’Orto VHSH 30 (30mm) Atomiser : DP268 Main Jet : 166- 180 Idle Jet: 60- 64 Idle jet diffusor (this is found under the idle jet) : B48 Slide : 50 B2 Needle : U16 (1st position from the top) Float needle valve: 300 Starting point for jetting Dellorto VHSB 34LD Slide – standard Needle K21 or K24 2nd clip from top Needle jet (atomiser) DP267 Main Jet 198 Pilot Jet 45 to 55. Head: pm tuning head(30cc approx) (malossi type ) Pipe: pm tuning pipe Tuning: ported/matched casings , hp4 flywheel, t5 fourth gear, cosa banded 23tooth ,4 plate clutch, ngk b8es plug Crank: mazz crank Timing: 15/16 btdc (which does require much filing of slots in stator) Carb: 28mm carb,run through malossi hose to frame Mar 12, 2018 · Scootering is the world’s number one scooter magazine. Remove the main jet. 5 / LBS-FT 15 – 18 / Nm 20 - 24 BGM8597 BGM8596 Sep 17, 2018 · 118-122 Main Jet 70 choke 40 slide 50-52 pilot jet AV266 Atomiser X7 needle on 2nd clip from top This is just a loose guide. Toddy Posts: 9857 Joined: Tue May 13, 2014 8:58 pm By tuning we would normally mean taking an existing Lambretta cylinder or a bolt on kit and modifying it from its standard form. Whether or not your carburettor is a MIKUNI or a KEIHIN, it does not matter. Main jet for box pipes 100 to 105 Main jet for expansion 110 to 120 Suggested jetting between 130 -135 main jet, AV268 atomiser, X13 (or X7) needle, 40 slide, 55 idle jet, Timing set at 17 degrees BTDC. Apr 16, 2021 · Dellorto Carb Setup Tips – Beginners Strip Down Guide – Vespa & Lambretta Carburettor JettingThe Targa was having a bad-carb day, so I opted for a strip down I don't know where that chart originates from but the measurements don't match some original Dellorto atomisers I have previously measured. . I had a remote filter directly on the carb and an old Indian Clubman. Jetting By Jon Courtney; Scooter Jun 18, 2018 · A Lambretta spares catalogue has exploded diagrams of every section of the machine which will show you where everything goes. Main 122, atomiser AV264, needle X13 2nd clip, Slide 40, Pilot 55, Choke 70, Needle Valve 300. Needle jet (atomiser) DQ266 – DQ267. Use this table as a general guide: Magneto type: Inches: Metric: 4 pole: 0. Check here for a list of various carb set-ups to help with jetting and all aspects of carb trickery! The table below is a guide and starting point for the most popular set ups and carbs used. So tuning, going faster, getting the most from your engine, it is all part of the fun and enjoyment of owning something different. Float Valve 300 minimum Choke Jet 50. Feb 27, 2017 · Jetting guide for the Casa Performance SS 200 and SS 225 cylinder kits. Jan 27, 2021 · I am after a guide that would help you jetting a carb from scratch on a non standard engine. Drained the tank and cleaned the carb, put in 45 pilot and 123 main for starters with 5899-4 atomiser and a 7895-1 slide that I had in my box of bits. May 25, 2016 · Pilot jet: Controls tickover, and (presumably) starting. Working on a Lambretta is very easy and straight forward job. Scootopia made Lambretta GP150 & 200 22mm carb to fit all Lambretta series 1/2/3 & DL/GP (We recommend you will need a GP150 Manifold with this carb. AF Rayspeed are situated in Malton, North Yorkshire. Jul 21, 2018 · Mugello 186. Please note this is a guide only as every scooter is individual and needs different jettings. The help and information is all there for you to browse. Current setting are: Main jet 125 Pilot 55 Atomiser 264 Slide 40 Needle X7 Needle position second from the bottom, easy enough to fit,you could go for a delly 30 or a 26 (same size body as a 28) or a 25. That's that. The kit is for small-block engine casings only but his unique design of the cylinder is what gives it an advantage over other kits. My belief is that any two stroke setting should err on the cautious side, but proving the suitability of the atomiser is something that is done with no main jet fitted, commencing with the smallest likely atomiser & moving up a size @ a time until the best minimum size is established. This is the most important step in jetting your carburettor, period! 1. A website dedicated to Vespa and Lambretta scooters. 57 Page "Introduction This Lambretta 'Perfomance Tuning And Conversions' Manual is an exact and authentic reproduction of the unique and highly acclaimed original which was produced in the 1960's when Lambretta was the number one in two-wheeler sales in the United Kingdom. For example, two 5899-4's from different sources, one of which is my GP150 that hadn't been touched since the 70s, has the upper 'low rpm' hole at 1. Needle Float Part No 00412040 – Main Needle Jet D. " The most notable outward styling difference between the TV and SX 200 was unique cowls that had large arrow flashes on each side that read "200" in the middle of them. Smaller SH20/22 and PHBL jettings are for running with a GP200 sized airbox, with a hi flow filter. With the right jetting i feel itll run a lot cleaner than it does now. Gear charts, suggested set ups for kits, jetting advice, screen savers and more. I can see this as the size of the cutaway is smaller on the 5914-1 CAMBRIDGE LAMBRETTA guide to reading spark plugs! Mugello 186 / 198 / 200 kits. The base is zinc-plated high grade steel and the guide piece itself is a special compound of self-lubricating nylon that has been tested in the 'Casa Lambretta Racing Team' scooters, with outstanding results. The basic princi-ples work on all 2 stroke engines with a carb though. By altering one jet, you may Jun 4, 2014 · Board index ‹ Lambretta Help AF Rayspeed jetting guide - Jetex,Dellorto & Amal. Even though most people relate the main jet to their carburetor in general, the main jet is only responsible for the last ¼ of the jetting. 020 – 0. Often found on a MK II / III (See image 5 & 6 above) 00412122 MA19 B4 – Model D150 Carb 00412138 MA19 B4 – Model LD 150 Carb This fits :-Li Series 3, Li Special, TV 175 / 200, SX 150 / 200, GP (DL) 125 / 150 / 200 Jun 4, 2014 · Board index ‹ Lambretta Help AF Rayspeed jetting guide - Jetex,Dellorto & Amal. 2 If you suspect a fault, faulty ignition, dodgy fuel, air leaks, blown gaskets, blocked jets to richen the jetting and make the engine safer. Pre-ignition. Casa Lambretta Catalog 2013 (English) May 22, 2014. This is a small guide to get the jetting of the carb on your Lambretta right. how the carb works and what part on your carb does what. I can see that the 5914-1 slide is richer than the 5914-2, for example. Place needle clip in mid-position. Apart from the pilot and main, you have two choices of slide or atomiser. It started with a few kicks but I couldn't keep it running for long so whilst changing the pilot jet I found a bit of water in float bowl. standard Lambretta) PART 1 Introduction to tuning a Lambretta Engine PART 2 Introduction to tuning cylinders the MB way PART 3 Explaining advanced tuning PART 4 Explaining advanced port timings PORT TIMINGS Any port timings I have quoted in the rest of the article are based on many years experience and what I have found by measuring nearly every cylinder and engine tuned over a 30+ year period. A Scooter & Scooterist Production. CAMBRIDGE LAMBRETTA set up instructions for Monza 225 kits! Monza 225 Kits These instructions are based on the latest version of the kit, using a 58mm stroke crankshaft with 107mm rod (i. 1 . Needless to say,i've tried all the jetting options to eliminate any jetting issues, and i'm not sure it's running that efficiently with the 22 carbs anyway. Jul 13, 2020 · hi ive got an rt 195 that ive fitted a piston to for a friend of mine after he holed the piston, i have a feeling it was partly to do with the ignition timing which i have adjusted, i had to enlongate the slots to get 17 degrees, it was about 21 without slotting the holes, i also had to remove a laminate from the stator to line up the pick up as there was no spark when i checked it, carb is a Jun 28, 2020 · Scooter Tuning Tips: Lambretta & Vespa scooters - how to set up Ignition Compression Jetting ExhaustIgnition curves can be tweaked and pushed backward/forwar Aug 4, 2018 · We all hold different opinions & some may be borne out through experience over many years. standard Lambretta) We do not recommend using stroked or differing con rod lengths without checking and adjusting port timings if needed. 1966Discount not applicable The Offical Lambretta Guide (re Full tuning with Dyno, porting, jetting, custom exhausts and carb upgrades – We can lift your Lambretta power over 40BHP at rear wheel!! Beware all tune ups come with a risk – more BHP+ more stress on the engine, we take great care with our builds and component selection to ensure best reliability. So the question is ,in anyones experience what is a better set up, have heard 25mm through the airbox ,or remote somewhere,and what carb, and does anyone do a complete kit i. Oct 8, 2020 · Lambretta and Vespa scooters emerged from their Italian factories with Dellorto carburettors fitted as standard, and despite an Amal on my liquid-cooled TS1, I still know, love and understand a Dellorto carburettor. We have Putoline ½ltr & Silkolene 1ltr All later models run ST90, again ½ a litre is sufficient. If your mixture screw won't go lean enough fit a smaller pilot, if it won't go rich enough fit a bigger one. 024: 0. Just in the case you don’t know. 98 shown. Main 100. 5 turns out . The tools needed on a standard Lambretta or one that is close to standard are: · Ratchet with 8, 10, 11, 13, 14, 24 mm Designed in conjunction with scooter author Sticky, this is the most solid, easily adjustable chain guide tensioner on the market. We are one of the UK’s leading Lambretta & Vepsa experts in tuning and restoring classic scooters. Caution: Be aware that exhaust systems do vary in their jetting requirements, these jet settings are only a guide. Part 3: How to set-up a Dellorto PHBH carburettor on almost every Lambretta & Vespa scooter!Strap yourselves in, the final chapter covers the following topic Hi fellas, i have fitted 198 to SX150 with a DJ exhaust (its a chop lol) and running a 28mm dellorto. How to set-up a Dellorto PHBH carburettor on almost every Lambretta & Vespa scooter! - Part 1The PHBH is possibly the most underrated carb for Lambretta & Ve Apr 29, 2014 · Once this is sorted ill feel better! Jetting is still not right, but as i use it everyday its good enough, all on the rich side. Nevertheless, when you do it for the first time, take your time and read our fitting instructions and the Spanners Manual thoroughly before getting started. It runs through an undrilled air box with the baffle removed and a standard air filter element. Clearance Lines GP (DL) 125 / 150 / 200 SX 150 / 200 TV 175 / 200 Li Special Li Series 3 Series 2 Series 1 TV1 150D - LD150 & LD125 1956-125D - LD125 Up To 1955 LD French Model E & F Model C & LC Model B Model A Lui, Vega & Cometa J50, Cento, J125, Starsteam Lambretta 48 Serveta Lambro Performance Tyres Accessories Tools Oil & Lubricants Apr 26, 2015 · My final set up is a 104 main jet with a 25 pilot, with a JJN needle at T2 (where T1 is top - Weakest). 5 – 0. The best customised and restored scoots are showcased in glorious detail and there’s rally reports, reviews, music and top technical tips too. It doesnt spitback loads, dont have trouble starting it, and it can sit at genuine 60mph with out screaming itself to pieces. Defined as: ignition of the air/fuel mixture before the pre-set ignition timing mark Manual/Book - Lambretta - The Lambretta Manual of Performance Tuning And Conversions. As mentioned above, the needle jet takes over most of the fuel delivery from the pilot circuit as the throttle is opened. Best to start rich and come down weaker if necessary. In this video I go over every part of how to tune a Carb while its on the bike. 12. This may be a place to start but consider coming down on the main and the pilot. Float Valve 250 minimum Choke Jet 50 . This section offers no warranties and makes no guarantees, if your engine still does not start or run properly seek additional help from your Lambretta workshop manual or a Feb 4, 2020 · Board index ‹ Lambretta Help Main Jet 128 Pilot 55 Choke 60 Needle Valve 300 GP200 Indian GBOX 19x46 82 link 4. View our online catalogue for all your scooter parts, accessories and clothing. Your engine should tick over at a nice regular rhythm, and when you blip the throttle the revs should drop evenly and quite quickly. The list is endless; Amal, Dellorto, Wal Philips, Keihin, Lectron, Mikuni, Bing and many more, some are good some are bad some are better than others. 4 easy starting adjust throttle and choke instantly. Start motor and run it on the stand. B. I run mine open mouthed under full panel work with a homemade "tea strainer " filter. casm cwmonwra kjeku wnaiv byyher gjiwp kjnrf cxwj jkst bffud