Raider Max 175 (single-seat, double-seat): Service Manual EEC Version:2.0 April 2005
39
z
The engine doesn’t run stably or smoothly at the idle speed.
a)
The idle speed hasn’t been adjusted well.
b)
The mixture gas in the carburetor is too rich.
c)
The mixture gas in the carburetor is too lean.
d)
The air cleaner is clogged.
e)
Air is inhaled into the air suction system.
f)
The fuel has deteriorated.
g)
The air valve doesn’t work well.
h)
The negative pressure tube is damaged.
i)
The connecting pipe of the carburetor is damaged.
z
The engine stalls when the throttle is fully open.
a)
The negative pressure piston film is damaged.
b)
The negative pressure tube is clogged.
z
The mixture gas is too lean.
z
The fuel jet is clogged.
z
The air hole of the fuel tank cover is clogged.
z
The fuel filter is clogged.
z
The fuel tube is clogged.
z
The float valve does not work well.
z
The fuel level is too low.
z
The mixture gas is too rich.
a)
The automatic choke is opened too widely.
b)
The float valve doesn’t work well.
c)
The fuel level is too high.
d)
The air cleaner is clogged.
e)
The automatic chock isn’t assembled correctly.
z
The carburetor can’t start, or becomes difficult to start.
Reason Analysis
: After the tryout, the carburetor has been exposed in the air for a long period, so
that a layer of mucous membrane has formed and blocked the main jet. As a result, the oil can’t
flow smoothly and the engine starting becomes difficult, or the engine stops soon after starting.
Solvent:
a. Check if there is any damage or leakage on the
pressurized tube of oil cock;
Pressurized
Tube
