2-12-2022

Outboard

Inboard

Ducted Fan

8907

8935
8950

  8916

8910

Changes were made to the crankshaft.
Early 12mm, later 13mm.

Very early 3.5's sleeves had a smaller O.D. Crankcase I.D. and sleeve OD must be checked.
Early size is .750 -- Late/current size .765

Early inboards and outboards were equipped with an exhaust throttle and venturi, no carburetor. Rather difficult to adjust and set up. We suggest converting to a carburetor.

Early outboards, 8906 8383... Lower leg has short skeg and a clamped in prop shaft housing assembly.
New style left had threaded prop shaft housing will not fit. You must replace the entire lower unit.
Some of the first PTO plates only had one ball bearing, usually if the square drive side is worn you will leak crankcase pressure and engine will run poorly. First PTO has a lock ring pressed on the square drive side which was eliminated in the late 1980's.

Head squish band clearance .018 (18 thousands)

 

* DF - Ducted Fan / OB - Outboard / IB - Inboard

The list below is just for quick reference. To see price and availability click this link
Click here for prices, availability and on line ordering

New
Part No.
Old
Part No.
Description
Model
Model No.
Crankcase
OB
8935 8907 8906 8950
Crankcase
DF
8910
Crankcase
IB
8916
Water cooling jacket 92
IB
8916
Head button use 8502
IB
OB
8916
8709
Head Assembly
IB
8912
Engine Maintenance Kit
DF
IB
8910
8916
Head
AERO
-
Head
DF
8910
Head button Combustion Chamber
OB
IB
8907
8916
Water Cooling Jacket Assembly
OB
IB
8907 8906
8916
Head, Air Cooled (Gold)
OB
8935
Wrist Pin w/ Teflon Pads
OB
DF
IB
8935 8907 8906
8910
8912 8916
Connecting Rod
DF
IB
OB
8910
8916
8907 8935
Early Connecting Rod 93
OB
DF
IB
8907 8906
8910
8916
Crankshaft
AERO
-
Crankshaft 12mm
OB
8906
Crankshaft
DF
IB
8910
8916
Crankshaft, 13mm
OB
8935, 8907
Crankshaft 12mm
IB
8912
Ball Bearing, PTO
OB
8935 8907 8906
Ball Bearing, Rear 12mm
OB
IB
8906
8912
Ball Bearing, Front
OB
DF
IB
8935 8907
8 910
8912 8916
Ball Bearing, Rear
DF
IB
8910
8916
Ball Bearing, Rear 13mm
OB
8935 8907
Collet
DF
IB
OB
8910
8916
8935 8907 8906
Flywheel 93
IB
8912 8916
Flywheel complete
IB
8912
Prop Drive
AERO
-
Prop Drive (use 20-8901)
DF
8910
Flywheel, Aluminum
OB
8907 8906
Flywheel, Aluminum
IB
8916
Flywheel (Gold)
OB
8935
Back cover
IB
8912
Backplate PTO
OB
8935 8907 8906
Backplate Assembly w/Drum Rotor
DF
IB
8910
8916
Backplate Assembly PTO
OB
8935 8907 8906
Washer
IB
8916
Flywheel Nut
OB
8935 8907 8906
Screw set, carb
Aero
-
Screw Set, engine
AERO
ALL
Screw Set, engine
IB
ALL
Screw Set, engine
OB
ALL
Screw Set, lower unit
OB
ALL
Screw Set, muffler
AERO
ALL
Screw Set, adapter
MARINE
ALL
Screw Set, carb
MARINE
-
Teflon pad
-
-
Snap Ring
-
-
O-ring for Exhaust Adapter  
-
Carburetor neck O-ring (1pc)
OB
DF
IB
8935 8907 8906
8910
8912 8916
Carburetor Draw Bar
DF
IB
8910
Maintenance Kit
IB
8912
Gasket, Engine (2 each)
OB
DF
IB
8935 8907
8910
8916
Gaskets
IB
8912
Head Shim Kit (.005 & .010) 1 ea.
OB
DF
IB
8935 8907
8910
8916
Muffler Adapter - Complete w/butterfly
IB
8912
Exhaust control arm w/screws
IB
8912
Exhaust Adapter
DF
8910
Exhaust Adapter, 12 Degrees
IB
8916
Exhaust Adapter, 20 Degrees
IB
8916
Exhaust Adapter
OB
8907 8906
Exhaust Coupler tube
IB
-
Tuned Muffler
OB
8935
Muffler Exhaust Adapter
OB
8935
Muffler Assembly - Vertical Stacks
IB
8912
Front plate Assembly
DF
IB
8910
8916
Front plate Assembly
OB
8935 8907
Front Housing 12mm crank
OB
8906
Front Housing
IB
8912
Front housing assemble
OB
8906
Front plate complete
IB
8912
Front Plate
AERO
-
Front Plate
DF
IB
8910
8916
Front Plate
OB
8935 8907
Piston & Sleeve (Std timing - requires Teflon pads on wrist pin)
OB
DF
IB
8935 8907 8906
8910
8912 8916
Piston & Sleeve, Gold head SS (pipe timing - requires Teflon pads on wrist pin)
OB
DF
IB
8935 8907 8906
8910
8912 8916
Piston & Sleeve, Gold Head SS (pipe timing - requires snap rings on wrist pin)

OB
DF
IB

8935 8907 8906
8910
8912 8916
Drum Intake Valve
-
-
Prop 1 3/8 x 1 3/4 93
OB
8907 8906
Prop 1 3/8 x 2 93
OB
8907 8906
Lower Unit Maintenance Kit
OB
8935 8907 8906
Prop 93
OB
8907
Lower Unit Assembly
OB
8907 8906
Lower Unit Assembly
OB
8935
- Lower Unit Assembly
OB
8950
Lower Unit Halves, Matched
OB
8907 8906
Lower Halves (Matched)
OB
8935
- Lower Unit Assembly
OB
8950
Flex Shaft 5/32 dia
OB
8935 8907 8906
Water Intake Tube
OB
8907 8906
Collet, U joint nut & washer
IB
8912
Prop Nuts (2 each)
OB
8935 8907 8906
Square Drive (.130 sq. for .150 cable)
IB
8916
Water Fitting, Bent w/ Nut (Inlet)
OB
8935 8907 8906
Water Fitting Straight (10-32 Thread)
IB
OB
8912 8916
8907 8906
Hinge Pin
OB
8935 8907 8906
Cable Collet Assembly 5/32
IB
8916
Cable Collet 5/32
IB
8916
Twin steering arm w/2 screws
OB
8906
Hinge 93
use 8934
OB
8907 8906
Teflon Flex Shaft housing
OB
8935 8907 8906
Steering Arm
OB
8935 8907
Hinge (nylon)
OB
8935 8907
Prop Shaft Assembly
OB
8935 8907 8906
Shaft. PTO
OB
8935 8907 8906
Multi Speed Carburetor 93
OB
DF
IB
8907 8906
8910
8916
K&B Carburetor (Gold) Has idle screw to hold barrel (Neck dia .437)
OB
-
K&B Carburetor (Gold) 94 (.312 inlet) Darker Gold, No Idle adjustment screw, uses snap ring to hold barrel (Neck dia .437)
OB
DF
IB
8935 8907
8910
8916
K&B Carburetor (Red) (.345 inlet) (Neck dia .437) Purple has been sold
OB
DF
IB
8935 8907
8910
8916
K&B Carburetor (Black) (.265 inlet) (Neck dia .437)
-
-
Carburetor Body and spray bar 93
OB
DF
IB
8907 8906
8910
8916
Venturi
IB
8912
Carburetor body & Spray Bar
OB
IB
DF
8935 8907
8910
8916
Venturi 95
IB
8916
Carburetor Barrel 93
OB
DF
IB
8907, 8906
8910
8916
Carburetor Barrel
DF
OB
IB
8935, 8907
8916
8910
Snap Ring (Carburetor barrel)
DF
IB
OB
8910
8935
8907
Needle Valve Clip
IB
8912
Carburetor Control Arm Kit
OB
DF
IB
8935 8907 8906
8910
8916
Carburetor Control Arm    
Needle Valve Assembly
IB
8912, 8916
Flex Shaft Lube
OB
8935 8907 8906
Needle Valve Collet & Locknut
OB
IB
DF
8935 8907 8906
8910
8916
Water Fitting, Bent w/Nut
OB
8907
Needle Valve body, nut & clip
IB
8912
Carburetor Fuel Fitting
OB
IB
8935 8907 8906
8916
Needle Valve Stem
OB
DF
IB
8935 8907 8906
8910
8916
-
7777
Needle Valve Knob
IB
8912
-
8482
Engine Maintenance Kit
OB
8935 8907 8906