Service manual

MERCARB 2 BARREL CARBURETOR
SERVICE MANUAL NUMBER 26
90-861329--1 MARCH 1999 Page 5B-5
High Altitude Re-Jetting
Engine flooding problems, at idle rpm, are generally related to the altitude (above sea level)
at which they are operated. If engine is running too rich at higher elevation, order a smaller
jet from the chart. A jet stamped “165” is a 1.65 mm jet.
Model
Carburetor
Part Number
5000 ft
(1525 m)
and Below
5000-9000 ft
(1525-2745 m)
9000 ft
(2745 m)
and Above
3.0L 3310-807504 1.55 mm 1.55 mm 1.45 mm
JET SIZES
Jet Size Quicksilver Part Number
1.30 3302-811849
1.35 3302-811850
1.40 3302-811851
1.45 3302-9050
1.50 3302-811852
1.55 3302-811853
1.60 3302810923
1.65 3302-9058
1.70 3302-9055
1.75 3302-881854
1.80 3302-811855
1.85 3302-811856
1.90 3302-811857
Important Service Information
Flooding at Idle RPM
If your engine floods at idle rpm, check the following:
1. Problem in ignition system causing engine to run rough.
2. Idle mixture screw adjusted incorrectly.
3. Bad needle and seat.
4. Incorrect float level drop.
INDEX