Mercury 225 - Page 13

90-822900R3 DECEMBER 1997 IMPORTANT INFORMATION - 1A-7
Model 3 Litre Work/225 Carb/225 EFI/250EFI
C
A
R
B
U
R
E
T
O
R
Model 225
Idle RPM
Wide Open Throttle (WOT) RPM
Idle Mixture Screw Adjustment
Float Adjustment
WMV 13
– Cylinder #1
– Main Jet
– Idle Jet
– Vent Jet
– Cylinder #2
– Main Jet
– Idle Jet
– Vent Jet
– Cylinder #3
– Main Jet
– Idle Jet
– Vent Jet
– Cylinder #4
– Main Jet
– Idle Jet
– Vent Jet
– Cylinder #5
– Main Jet
– Idle Jet
– Vent Jet
– Cylinder #6
– Main Jet
– Idle Jet
– Vent Jet
650 ± 50
5000 – 5500
1-1/2±1/4
Float is Level with top of Bowl w/Bowl In-
verted
.084
.046
.082
.082
.060
.082
.084
.054
.086
.086
.052
.086
.084
.058
.082
.082
.052
.082
T
I
M
I
N
G
Idle Timing
Maximum BTDC
@ W.O.T (5000 RPM or Above)
MODEL 3 LITRE WORK/225 CARB
MODEL 225 EFI
MODEL 250 EFI
4° – 8° ATDC
19° BTDC @ 5000 RPM
24° BTDC @ 5500 RPM
24° BTDC @ 5000 RPM
24° BTDC @ 5800 RPM
24° BTDC @ 5000 RPM
28° BTDC @ 5800 RPM
NOTE: Timing specifications listed are for 1998 model year engines. Refer to timing decal on engine for previous
model year timing specifications.