2-36
INSP
ADJ
1
CARBURETOR TUNING
Low-speed tuning
The carburetors are built so that low speed tuning
can be done by adjusting the pilot mixture screw
2
and throttle stop screw
1
.
CAUTION:
Never run the engine without the air intake si-
lencer installed. Severe engine damage may re-
sult.
1. Tighten the pilot mixture screw until it is
lightly seated and then back it out the speci-
fied number of turns.
Pilot mixture screw
2
:
MM600: 2 turns out
MM700: 1-1/2 turns out
Pilot mixture screw effects:
Turn in
←
STD setting
→
Turn out
Leaner
Richer
Mixture
Mixture
2. Set the engine idle speed by turning the throttle
stop screw in (to increase engine speed) or
out (to decrease engine speed).
Standard idle speed:
1,600
±
100 r/min
3. If low-speed performance is still poor at higher
elevations under extreme conditions, the stan-
dard pilot jets may need to be replaced. In this
way, the proper air/fuel mixture is obtained.
NOTE:
In this case, use a larger numbered pilot jet to
enrich the air/fuel mixture.
Standard pilot jet:
MM600: #42.5
MM700: #45
SEJ2790
SEJ2800
Summary of Contents for MM600D
Page 1: ...MM600D MM700D SERVICE MANUAL LIT 12618 02 12 8EJ 28197 10 981033 ...
Page 47: ...2 34 INSP ADJ CARBURETOR TUNING Guide for carburetion SEJ2750 ...
Page 201: ...SPEC 9 23 CABLE ROUTING SEJ9160 ...
Page 203: ...SPEC 9 25 CABLE ROUTING SEJ9170 ...
Page 205: ...SPEC 9 27 CABLE ROUTING SEJ9180 ...
Page 207: ...SPEC 9 29 CABLE ROUTING SEJ9190 ...
Page 209: ...SPEC 9 31 CABLE ROUTING SEJ9200 ...