GAS GAS TXT RACING 125CC 2020, Owner'S Manual

Page: 47 / 51

Owner's Manual
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Troubleshooting
FAULT CAUSE SOLUTION
6 Engine makes strange noises - Igni! on problem.
- Overhea! ng.
- Go to a specialized workshop.
- See sec! on 5.
7 Exhaus
t backfi res -
Presence of carbon in combus! on
chamber.
- Poor quality petrol or wrong octane
ra! ng.
- Spark plug in poor condi! on or with
wrong specifi ca! ons.
- Damaged exhaust system gaskets
- Clean combus! on chamber.
- Drain petrol and add new with higher octane ra! ng.
- Replace spark plug with new or more appropriate one.
- Check if exhaust system damaged. Gaskets must be in
perfect condi! on, if not, change them for new ones.
8 Exhaust emits white smoke - Damaged cylinder head O-ring. (Water
leaks into cylinder).
- Incorrectly adjus ted thro# le valve
cable.
- Replace O-ring on cylinder head cover.
- Go to a specialized workshop.
- Adjust thro# le valve cable.
9 Exhaust emits brown smoke - Clog
ged air fi lter.
- Main jet too high.
- Clean or change air fi lter. - Go to a specialized workshop.
- Check main jet. Go to a specialized workshop.
10 Gears do not engage - Clutch does not detach.
- Bent or seiz ed shi$ fork
- Seized gear in transmission.
- Damaged gear shi$ lever.
- Broken or loose selector posi! on
spring.
- Broken selector reverse mechanism
spring.
- Broken shi$ drum.
- Broken gear selector ratchet spring
- Contact specialist garage.
- Change shi$ fork.
- Go to a specialized workshop.
- Replace gear shi$ lever.
- Adjust selector posi! on spring or change.
- Replace selector reverse mechanism spring.
- Change shi$ drum.
- Replace selector ratchet spring.
11 Gears jump - Worn shi$ fork in gears.
- Worn gear groove.
- Damaged gear lugs.
- Worn drum shi$ groove.
- Worn shi$ fork axle.
- Broken selector drum posi! on spring.
- Broken gears.
- Change shi$ fork.
- Change. - Go to a specialized workshop.
- Change. - Go to a specialized workshop.
- Change. - Go to a specialized workshop.
- Change axle. - Go to a specialized workshop.
- Change spring. - Go to a specialized workshop.
- Contact specialist garage.
12 Clutch slips - No play on clutch lever
- Worn clutch plate.
- Worn clutch hub.
- Broken or weak clutch spring.
- Worn clutch discs.
- Contact specialist garage.
- Replace clutch plate. - Go to a specialized workshop.
- Change clutch hub.
- Adjust or change clutch spring.
- Change clutch discs. Go to a specialized workshop.