Question about Yamaha Motorcycles
I have already modified my yamaha lagenda motorcycle 115Zcc from standard to big cylinder block 61mm type Yusta , Carburetor MIKUNI 30mm, CDI no cut off type BRT Dual Band Powermate and HI Camshaft.
Hi, Suhaimi and the usual suspects are:
1. Severely discharged or a damaged battery, should have 12.5 volts or better and be able to pass a "LOAD" test if necessary, your battery may show 12.5 volts but have little or zero amps and needs to be replaced.
2. Failed alternator/generator and or voltage regulator.
3. Loose or corroded battery terminals and or cables especially the "NEGATIVE" cable, look for loose, corroded, or broken connectors inside the cable harness at "BOTH" ends.
4. Failed main circuit breaker or ignition switch, check for loose connections and continuity.
5. Failed system and or ignition relay, check for continuity.
6. Failed ignition coil, stator, magneto, points/condenser ignition/electronic module.
7. Failed CKP, CPS, CMP, MAP, TPS, or BAS sensor, corroded, loose or broken wire connector pins/sockets.
8. Throttle cables and or idle speed improperly adjusted hot idle speed should be 950 RPM to 1000 RPM.
9. Air/fuel mixture screw improperly adjusted.
10. Accelerator pump damaged or not working.
11. Water or dirt in the fuel system, carburetor or filter.
12. Restricted, blocked or kinked fuel line.
13. Fuel tank empty.
14. Fuel tank contaminated with ethanol sludge.
15. The gas cap is not venting properly or fuel tank venting system blocked.
16. Vacuum line from intake manifold to petcock broken, cracked, or not attached, carburetor vent line plugged.
17. Needle and seat stuck closed in the float bowl.
For more information about your issue and valuable "FREE" downloads that you need please click on the blue links below. Good luck and have a wonderful day.
engine stalls or dies suddenly help please
Yamaha 115Z Owner Manual
OEM parts for Yamaha
lagenda 115z zr t115se Download 4shared Judd
Posted on May 04, 2017
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Posted on Jan 02, 2017
SOURCE: Gilera Nordwest Carb setting
I have a gilera RC 600 which has the same engine as the nordwest, the problem could be the carb needs to be stripped and cleaned and replace the foam air filter with a paper one. For accurate advice and spares which are quickly posted, contact BOB WRIGHT at 0044193451033. He is the official UK gilera specialist, tell him I sent you, say the guy in southern Ireland, and he will look after you. Good Luck.
PS please rate me if this helped
Posted on Jun 26, 2009
i had a simuler problem with my honda cr 250 moto-x bike it would start fine and you could keep it ticking over with the throttle(i have deliberatly unscrewed the tickover in case i come off,it will cut out) when i got on it,it would go for about 400-500 metres then splutter and die and not start again for around 5 mins. i immediatly knew it was a fueling problem. so after stripping the carb and giving it a good clean out i was baffled when i got back on and it still done the same. i then dismantled the fuel tap cleaned it all out and put it back together and tested it,it was very very slow so i unsrewed my fuel cap a little and was greated with the familur gush it should deliver. problem solved! the vent in my fuel cap had crystalised up,so the fuel was coming out but the air was not getting in,causing a vacuum and slowing down the flow and basically emptying the carb quicker than it can fill back up!!! clean your carb,fuel tap and any vents in your cap or tank. if this does not work then your bike must be over fueling or low on compression.
Posted on Sep 18, 2009
SOURCE: dirt bike thats hard to start..
needle and seat are worn out in carb, to much fuel is flooding cylinder. remove carb, clean, get new needle and seat, set float. problem goes away. pull your plug after kicking. its probably wet.
When you push, or pull start you evacuate excessive fuel, when engine is warm, easier to start extra fuel burns easier.
Posted on Jan 15, 2010
Are you sure it is the carburetor's fault and not the mechanical fuel pump's? (the **** underneath your fuel tank on your right hand)?Anyway your engine is the same with Yamaha's XV 250 Virago so you are looking for the same carburetor.I found 3 on the Italian eBay but they don't seem to ship worldwide.
Posted on Feb 10, 2012
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