2-14-2024
All K&B 7.5cc (.45) and some parts fit 6.5cc (.40)
Always refer to these as 7.5's or 6.5's --- NOT .45 or .40
IB
DF
OB
9181
9101
8702
8703

Outboard #8701 First model. 8702 second model. 8703 third model.

Displacement .452 (7.41cc) Bore .870 Stroke .760
RPM 2,000 - 25,000 HP 2.2 @ 25,000 Weight 2.03 lbs.
Several carburetor styles used.

* DF - ducted fan / OB - outboard / IB - inboard
 

PARTS LISTED BELOW ARE FOR REFERENCE ONLY
Click here for prices, availability and on line ordering

New
Part No.
Old
Part No.
Description
Model
Model No.
8753
Power head less carburetor
OB
8702
7833
Prop Stud Assembly Kit
-
-
Crankcase
OB
8702 8703
Crankcase early model
OB
8701
Crankcase
IB
9181
Crankcase
DF
9101
One Piece Head
DF
IB
9101
9181
Head Assembly, Fittings & Screws
(use 11-8721 & 11-8722)
OB
8701 8702
Combustion Chamber
IB
OB
9181
8701 8702
Cooling Jacket
OB
IB
8701 8702
9181
air cooled head gold
OB
8703
Wrist pin w/pad early model
OB
8701 8702
Wrist Pin
OB
DF
8703
9101
Connecting rod .218 Lower end diameter
OB
IB
8701
9181
Connecting Rod (Tubular) .218 Lower end diameter
OB
DF
IB
8702 8703
9101
9181
Con Rod .234 pin dia.
OB
IB
8702 8703
9181
Crankshaft
Aero
-
Crankshaft; pin .218 dia.
DF
IB
9101
9181
Crankshaft (.234 dia?)
IB
9181
Crankshaft use with 9192 Con Rod .218 crank pin dia
OB
8702 8703
Crankshaft early model carbibe weight has small pin .218
OB
8701
Crankshaft use with 9193 Con Rod .234 crank pin dia
OB
-
Ball Bearing, PTO Top or Bottom
OB
8701 8702 8703
Ball Bearing - (Front)
OB
DF
IB
8701 8702 8703
9101
9180 9181
Bearing, (rear)
DF
IB
9101
9180 9181
early model rear bearing .592 ID --- 15mm
OB
8701
Ball Bearing (Rear) .671 ID -17mm
OB
8702, 8703
Collet
OB
DF
IB
8702 8703
9101
9181
Collet early model
(use 19-6101)
OB
IB
8701
9181
Prop Drive
DF
9101
Flywheel early model
OB
8701
Flywheel (Aluminum)
IB
9180 9181
Flywheel (Lightened) uses 19-6101 collet
OB
8702
Flywheel gold uses 19-6101 collet
OB
8703
Starter Overdrive Pulley
IB
9181
Back Cover
Aero
-
Back plate Only (PTO)
OB
8701 8702
Back plate only (PTO)
OB
8703
Drum Rotor Back Plate Assembly .625 carburetor neck hole
DF
IB
9101
9181
Back plate assembly w/ball bearings
OB
8703
Back Plate Assembly w/ Ball Bearings
OB
8701 8702
Prop Washer
DF
9101
Washer
IB
9181
Prop Nut
DF
9101
Prop stud, nut & washer
-
-
Prop Stud (1/4 -28 thread)
IB
9181
Prop Stud 2
DF
9101
Engine Screw Set
Semi-Pro
-
Engine screw set Aero
Aero - DF
-
Engine screw set Marine
IB
9181
Engine screw set Marine
OB
8701 8702 8703
Lower outboard unit screw set
OB
8701 8702 8703
Adaptor screws
-
-
Muffler screw set
-
-
Flywheel Socket Screw
OB
8702 8703
Wrist pin snaps
OB
8703
Teflon pads
-
-
O-ring for high speed needle
(use 27-0183)
OB
8701
Exhaust Adapter, "0" Ring
DF
IB
9101
9181
O-ring Carburetor Neck (2ea)
OB
DF
IB
8701 8702 8703
9101
9181
O-ring Carburetor Neck (2ea) early disk valve type
IB
9181
Carburetor Draw Bar
OB
DF
IB

8701 8702 8703
9101
9181

Carburetor Draw Bar early 8701?
OB
8701
Gaskets, Engine (2)
(use 29-4001)
OB
DF
IB
8701 8702 8703
9101
9181
Head Shim Kit, .003 & .010

DF
OB
IB

8701 8702 8703
9101
9181
Muffler gasket
OB
8703
Exhaust Adapter (w/o O-ring - uses 9023 O-ring)
DF
9101
Exhaust Adapter, 12 Degree (w/o O-ring - uses 9023 O-ring)
IB
9181
Exhaust Adapter, 20 Degree (w/o O-ring - uses 9023 O-ring)
IB
9181
Exhaust Adapter (w/o O-ring - uses 9023 O-ring)
OB
8701
8702
Adaptor pipe    
Muffler
OB
8703
Exhaust adapter
OB
8703
front plate complete with shaft early model
OB
8701
Front plate (old style 6.5, 7.5)
Aero
 
Front Plate
DF
IB
9101
9181
front plate outboard (has oiling hole)
OB
--
front plate early model
OB
8701
Front Plate Assembly
OB
8702 8703
Front Plate Assembly

DF
IB

9101
9181
piston/cylinder early model
OB
IB
8701 8702
9181
Piston/Cylinder assembly pipe timing
OB
IB
DF
8703
9101
9181
Piston/Sleeve
OB
8702
Drum Valve
DF
I B
9101 9181
twin steering arm early model
(use 8721)
OB
8701
prop
OB
8701
Lower Unit Assembly Complete exhaust thru includes flex shaft, teflon tube, prop shaft.
OB
8701 8702
Lower end assembly complete uses muffler (Includes flex shaft, Teflon tube, prop shaft)
OB
8703
Lower Unit Halves, Matched exhaust thru lower unit
OB
8701 8702
Lower end halves only
OB
8703
Flex Shaft
OB
8701 8702 8703
Water Pickup Tube
OB
8701 8702
Early exhaust baffles
OB
8701
Square Drive (.187 sq)
IB
9181
Hinge Pin (Stainless)
OB
8701 8702 8703
Prop Nut - 2 per bag
OB
8701 8702 8703
Cable Collet Assembly w/ 3/16 collet
IB
9180 9181
Cable Collet 3/16 ID
IB
9180 9181
Water Fittings, Bent w/nut
OB
8701 8702
Water Fittings (10-32)
IB
9181
Steering clamp
OB
8701
Teflon Flex Shaft Tube
OB
8701 8702 8703
Steering Arm
OB
8702 8703
prop shock
OB
8701
Prop Shaft Assembly
OB
8701 8702 8703
PTO Shaft
OB
8701 8702 8703
Hinge w/ Bushing
OB
8701 8702 8703
Hinge with bushing early model
OB
8701
Lower Unit Maintenance Kit
OB
8701 8702 8703
Carburetor complete 5/92 on carburetor needle
IB
9181
early style square carburetor
OB
8701
K&B Carburetor early DF, IB
OB
DF
IB
8702 8703
9101
9181
Carburetor(Optional) .453 Bore
OB
IB
8702 8703
9181
K&B Carburetor late
OB
8702
Carburetor body, early square carb
OB
8701
Carburetor Body early
OB
DF
IB
8702 8703
9101
9181
Carburetor Body late
OB
8702
carburetor barrel early model
OB
8701
Carburetor Barrel
OB
DF
IB
8702 8703
9101
9181
Carburetor barrel spring early model
(use 83-0102)
OB
8701
Carburetor Snap Ring
OB
DF
IB
8702 8703
9101
9181
early carburetor barrel spring
OB
8701
Carburetor control arm
-
-
throttle arm
OB
8701
needle valve collet and lock nut
OB
8701
Carburetor Fuel Fitting
OB
DF
IB
8701 8702 8703
9101
7525
idle needle receptacle early model
OB
8701
early carburetor idle stop screw
OB
8701
Needle valve stem early model
OB
8701
9180
idle needle w/O-ring
OB
8701
Carburetor Low Speed Disk early
OB
DF
IB
8702 8703
9101
9181
Low Speed Disk late (for remote needle)
OB
DF
IB
8702 8703
9101
9181
throttle cable bracket
OB
-
Needle valve assembly on carburetor
IB
9181
Needle Valve Assembly (early style w/ needle on carburetor)
-
-
Carburetor Maintenance Kit late
OB
8702
Carburetor Maintenance Kit early
OB
DF
IB
8702 8703
9101
9181
Engine Maintenance Kit
(use 29-8701 and 25-87xx)
OB
8702 8703
Remote Needle Valve
OB
DF
IB
8702 8703
9101
9181
Mixture Control Needle Valve
OB
DF
IB
8702 8703
9101
9181
Flex Shaft Lube
OB
8701 8702 8703
Engine Maintenance Kit
OB
DF
IB
8701
9101
9181