Honda XL350R 1984 Shop Manual page 46

FUEL SYSTEM
TOOL
Float level gauge
Pressure pump
Vacuum pump
TORQUE VALUE
Fuel tank mounting bolt
TROUBLESHOOTING
Engine Cranks But Won't Start
• No fuel in tank
• No fuel to cylinder
• T oo much fuel getting to cyl inder
• No spark at plug (ignition malfunction)
• Air cleaner clogged
07401 - 0010000
ST - AH-255-MC7 }
ST - AH -260-MC7 U.S.A. only
18-25 N·m (1.8-2.5 kg·m. 13- 18 ft·lb)
Engine Id les Faster, Roughly . Stalll, or Runs Poorly
• Idle speed incorrect
• Ignition malfunction
• Cylinder compression too low
• Rich mixture
• lean mixwre
• Air cleaner clogged
• Air leaking into manifold
• Fuel contaminated
• Secondary carburetor touch-point too late
• Secondary carburetor not closed properly
• Fuel tank breather tube clogged
lean Mixture
• Carburetor fuel iets clogged
• Fuel cap vent blocked
• Fuel filter clogged
• Fuel line kinked or restricted
• Float valve faulty
• Float level too low
Rich Mixture
• Worn or damaged choke valve
• Float valve faulty
• Float level too high
• Carburetor air jets
clogged
• Sticking float
• Dirty air cleaner
Idle Speed Too High
• Incorrect throttle stop screw adjustment
• Faulty choke valve
• Choke valve stuck open
• Faulty full close adjusting screw
(Adjustment, Page 4-10)
Engine Does Not Slow Down Smoothly
• Faulty full close adjusting screw
• I ncorrect air u:rew adjustment
Engine Lack. Power at Low end Idle Speeds
• Faulty secondary carburetor touch lever
(Adju stment, Page 4-'0)
• I ncorrect air screw adjustment
4-2