K&B Manufacturing

3.5cc (.21cu.in.) ENGINE
PARTS LIST

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)

Click here for prices, availabilty and on line ordering

* 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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MECOA/K&B -- P.O. Box 98 -- Sierra Madre, CA 91025 U.S.A.

©2004-1998 Model Engine Corporation of America, All rights reserved. K&B and the oval logo are Registered Trademarks of Model Engine Corp. of America Registered U.S. Patent Office

©2004-1998 Model Engine Corporation of America, All rights reserved.
K&B and the oval logo are Registered Trademarks of Model Engine Corp. of America
Registered U.S. Patent Office