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 8906 had a clamped in prop shaft assembly.
New style will not fit. You must replace the entire lower unit.

Head squish band clearance .018 (18 thousands)

 

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

NUMBERS LISTED BELOW ARE FOR REFERENCE ONLY

Click here for prices, availabilty and on line ordering

New
Part No.
Old
Part No.
Description
Model
Model No.
10-8901
8507
Crankcase
OB
8935 8907 8906 8950
10-8902
8524
Crankcase
DF
8910
10-8903
8528
Crankcase
IB
8916
-
8395
Water cooling jacket 92
IB
8916
-
8403
Head button use 8502
IB
OB
8916
8709
-
8409
Head Assembly
IB
8912
-
8911
Engine Maintenance Kit
DF
IB
8910
8916
11-8901
-
Head
AERO
-
11-8902
8404
Head
DF
8910
11-8921
8502
Head button Combustion Chamber
OB
IB
8907
8916
11-8922
8408
Water Cooling Jacket Assembly
OB
IB
8907 8906
8916
11-8923
8939
Head, Air Cooled (Gold)
OB
8935
15-8901
8438
Wrist Pin w/ Teflon Pads
OB
DF
IB
8935 8907 8906
8910
8912 8916
16-8901
8344
Connecting Rod
DF
IB
OB
8910
8916
8907 8935
16-8902
8390
Early Connecting Rod 93
OB
DF
IB
8907 8906
8910
8916
17-8901
-
Crankshaft
AERO
-
17-8902
8393
Crankshaft 12mm
OB
8906
17-8903
8527
Crankshaft
DF
IB
8910
8916
17-8904
8338
Crankshaft, 13mm
OB
8935, 8907
17-8905
8464
Crankshaft 12mm
IB
8912
18-8446
8446
Ball Bearing, PTO
OB
8935 8907 8906
18-8775
8775
Ball Bearing, Rear 12mm
OB
IB
8906
8912
18-8776
8776
Ball Bearing, Front
OB
DF
IB
8935 8907
8 910
8912 8916
18-8778
8778
Ball Bearing, Rear
DF
IB
8910
8916
18-8789
8789
Ball Bearing, Rear 13mm
OB
8935 8907
19-8901
6527
Collet
DF
IB
OB
8910
8916
8935 8907 8906
-
8422
Flywheel 93
IB
8912 8916
-
8476
Flywheel complete
IB
8912
20-8901
-
Prop Drive
AERO
-
20-8902
6521
Prop Drive (use 20-8901)
DF
8910
20-8921
8437
Flywheel, Aluminum
OB
8907 8906
20-8922
8933
Flywheel, Aluminum
IB
8916
20-8923
8938
Flywheel (Gold)
OB
8935
21-8901
8400
Back cover
IB
8912
21-8921
8350
Backplate PTO
OB
8935 8907 8906
21-8922
8552
Backplate Assembly w/Drum Rotor
DF
IB
8910
8916
21-8923
8340
Backplate Assembly PTO
OB
8935 8907 8906
23-8921
8373
Washer
IB
8916
24-8921
8427
Flywheel Nut
OB
8935 8907 8906
25-4081
-
Screw set, carb
Aero
-
25-8901
-
Screw Set, engine
AERO
ALL
25-8902
-
Screw Set, engine
IB
ALL
25-8903
-
Screw Set, engine
OB
ALL
25-8921
-
Screw Set, lower unit
OB
ALL
25-8931
-
Screw Set, muffler
AERO
ALL
25-8932
-
Screw Set, adaptor
MARINE
ALL
25-8982
-
Screw Set, carb
MARINE
-
26-8901
-
Teflon pad
-
-
26-8902
-
Snap Ring
-
-
27-8931
-
O-ring for Exhaust Adaptor 
-
27-8981
9050
Carburetor neck O-ring (1pc)
OB
DF
IB
8935 8907 8906
8910
8912 8916
28-5601
5658
Carburetor Draw Bar
DF
IB
8910
-
8477
Maintenance Kit
IB
8912
29-8901
5659
Gasket, Engine (2 each)
OB
DF
IB
8935 8907
8910
8916
29-8901
8822
Gaskets
IB
8912
29-8911
8519
Head Shim Kit (.005 & .010) 1 ea.
OB
DF
IB
8935 8907
8910
8916
-
8475
Muffler Adapter - Complete w/butterfly
IB
8912
-
9051
Exhaust control arm w/screws
IB
8912
30-8901
8398
Exhaust Adaptor
DF
8910
30-8902
8923
Exhaust Adaptor, 12 Degrees
IB
8916
30-8903
8924
Exhaust Adaptor, 20 Degrees
IB
8916
30-8904
8397
Exhaust Adapter
OB
8907 8906
30-8907
8932
Exhaust Coupler tube
IB
-
30-8921
8415
Tuned Muffler
OB
8935
30-8922
8467
Muffler Exhaust Adapter
OB
8935
30-8923
8468
Muffler Assembly - Vertical Stacks
IB
8912
-
8342
Front plate Assembly
DF
IB
8910
8916
-
8343
Front plate Assembly
OB
8935 8907
-
8388
Front Housing 12mm crank
OB
8906
-
8389
Front Housing
IB
8912
-
8687
Front housing assemble
OB
8906
-
8914
Front plate complete
IB
8912
31-8901
-
Front Plate
AERO
-
31-8902
8554
Front Plate
DF
IB
8910
8916
31-8921
8336
Front Plate
OB
8935 8907
33-8901
8836
Piston & Sleeve (Std timing - requires teflon pads on wrist pin)
OB
DF
IB
8935 8907 8906
8910
8912 8916
33-8902
-
Piston & Sleeve, Gold head SS (pipe timing - requires Teflon pads on wrist pin)
OB
DF
IB
8935 8907 8906
8910
8912 8916
33-8903
-
Piston & Sleeve, Gold Head SS (pipe timing - requires snap rings on wrist pin)

OB
DF
IB

8935 8907 8906
8910
8912 8916
37-8901
-
Drum Intake Valve
-
-
-
8431
Prop 1 3/8 x 1 3/4 93
OB
8907 8906
-
8463
Prop 1 3/8 x 2 93
OB
8907 8906
-
8484
Lower Unit Maintenance Kit
OB
8935 8907 8906
-
8931
Prop 93
OB
8907
50-8901
8686
Lower Unit Assembly
OB
8907 8906
50-8902
8937
Lower Unit Assembly
OB
8935
50-8903
-Lower Unit Assembly
OB
8950
51-8901
8540
Lower Unit Halves, Matched
OB
8907 8906
51-8902
8936
Lower Halves (Matched)
OB
8935
51-8903
-Lower Unit Assembly
OB
8950
53-8901
8428
Flex Shaft 5/32 dia
OB
8935 8907 8906
53-8902
8496
Water Intake Tube
OB
8907 8906
-
8479
Collet, U joint nut & washer
IB
8912
54-8771
8771
Prop Nuts (2 each)
OB
8935 8907 8906
-
5158
Square Drive (.130 sq for .150 cable)
IB
8916
54-8901
8368
Water Fitting, Bent w/ Nut (Inlet)
OB
8935 8907 8906
54-8902
8367
Water Fitting Straight (10-32 Thread)
IB
OB
8912 8916
8907 8906
54-8914
8426
Hinge Pin
OB
8935 8907 8906
54-8991
5270
Cable Collet Assembly 5/32
IB
8916
54-8992
5157
Cable Collet 5/32
IB
8916
-
5215
Twin steering arm w/2 screws
OB
8906
-
8396
Hinge 93
use 8934
OB
8907 8906
56-8916
8430
Teflon Flex Shaft housing
OB
8935 8907 8906
56-8921
8921
Steering Arm
OB
8935 8907
56-8934
8934
Hinge (nylon)
OB
8935 8907
57-8901
8685
Prop Shaft Assembly
OB
8935 8907 8906
57-8921
8341
Shaft. PTO
OB
8935 8907 8906
-
8680
Multi Speed Carburetor 93
OB
DF
IB
8907 8906
8910
8916
80-8901
9215
K&B Carburetor (Gold) Has idle screw to hold barrel (Neck dia .437)
OB
-
80-8902
9220
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
80-8903
9696
K&B Carburetor (Red) (.345 inlet) (Neck dia .437) Purple has been sold
OB
DF
IB
8935 8907
8910
8916
80-8904
-
K&B Carburetor (Black) (.265 inlet) (Neck dia .437)
-
-
-
8681
Carburetor Body and spray bar 93
OB
DF
IB
8907 8906
8910
8916
-
9058
Venturi
IB
8912
-
9219
Carburetor body & Spray Bar
OB
IB
DF
8935 8907
8910
8916
81-8951
8097
Venturi 95
IB
8916
-
8677
Carburetor Barrel 93
OB
DF
IB
8907, 8906
8910
8916
-
9218
Carburetor Barrel
DF
OB
IB
8935, 8907
8916
8910
-
6840
Snap Ring (Carburetor barrel)
DF
IB
OB
8910
8935
8907
-
7778
Needle Valve Clip
IB
8912
-
8684
Carburetor Control Arm Kit
OB
DF
IB
8935 8907 8906
8910
8916
83-5622
5622
Carburetor Control Arm   
87-2918
2918
Needle Valve Assembly
IB
8912, 8916
99-8449
8449
Flex Shaft Lube
OB
8935 8907 8906
-
7739
Needle Valve Collet & Locknut
OB
IB
DF
8935 8907 8906
8910
8916
-
7745
Water Fitting, Bent w/Nut
OB
8907
-
7776
Needle Valve body, nut & clip
IB
8912
-
8679
Carburetor Fuel Fitting
OB
IB
8935 8907 8906
8916
-
7737
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
 
 

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Registered U.S. Patent Office

No part may be reproduced without written permission from
MECOA/K&B -- P.O. Box 5 -- Sierra Madre, CA 91025 U.S.A.