Fuel System; Service Information; Troubleshooting - Sachs Bikes MadAss Reparaturanleitung

FUEL SYSTEM

SERVICE INFORMATION

GENERAL
WARNING
Gasoline is extremely fl ammable and is explosive under
certain conditions. Work in a well ventilated area. Do not
smoke or allow fl ames or sparks in the work area or where
gasoline is stored.
If the engine must be running to do some work, make sure
the area is well-ventilated.
Never run the engine in an enclosed area. The exhaust
contains poisonous carbon monoxide gas that may cause
lass of consciousness and lead to death.
CAUTION
Do not bend or twist the control cables. Damaged control
cables will not operate smoothly and may stick or bind.
When disassembling the fuel System parts, note the locations
of the O-rings. Replace them with new ones on reassembling.
Before disassembling the carburetor, drain the fuel in the fl oat
chamber by loosening the drain screw.
NOTE
If vehicle is to be stored for more than one month, drain the
fl oat bowls. Fuel left in the fl oat bowls will cause clogged jets
resulting in starting and driveability complaints.
SPECIFICATIONS
Fuel tank capacity
Fuel reserve capacity
Throttle grip free play
Carburetor Specifi cation
Identifi cation number
Venturi diameter
Float level
Air screw opening
Idle speed
Main jet
Main air jet
Jet needle
Needle jet
Jet needle setting groove
62
4.6 lit
0.35 lit
2-6 mm
Mikuni VM 12 101 6
13 mm
16.0 mm
2,5 turns out
1.800 rpm +/- 200 rpm
#47.5
#15
3N15
D-7 563
4th from top

TROUBLESHOOTING

Engine cranks but won't start
- No fuel in tank
- No fuel to carburetor
- Engine fl ooded with fuel
- Clogged air cleaner
- No spark at plug
Engine idles roughly or runs poorly
- Incorrect idle speed
- Rich mixture
- Lean mixture
- Clogged air cleaner
- Intake air leak
- Fuel contaminated
Lean mixture
- Clogged carburetor jets
- Blocked fuel tank breather hole
- Clogged fuel strainer screen
- Restricted fuel line
- Faulty fl oat valve
- Float level low
Rich mixture
- Choke stuck closed
- Faulty fl oat valve
- Float level too high
- Clogged air jets