Pick your bike, open a section, then match the red number on the drawing to the plate number in the parts list underneath. Every part shows its part number, price and an Add button.
Factory parts books (PDF) →Home>Make: Norton>1975 Norton Commando 850 Mk3>Engine, Primary Drive & Clutch>Primary Chaincases, Tensioner
| Plate # | Picture | Part Name | Part # | Qty Fitted | Description | Price | |
|---|---|---|---|---|---|---|---|
| 1 | Inner Primary Chaincase | 066023 | 1 | Bare. | |||
| 2 | ![]() |
Primary Chaincase Dowel | 067952 | 1 | $4.80 | View | |
| 3 | ![]() |
Nut | 060355 | 1 | 1/4" UNC plain. | $0.30 | View |
| 4 | ![]() |
Inner Chaincase Sealing Plug | 064727 | 1 | Metal. | $4.55 | View |
| 5 | ![]() |
Inner Chaincase Oil Seal | 065956 | 1 | Behind clutch, double lipped. | $4.60 | View |
| 6 | ![]() |
Inner Chaincase to Crankcase Gasket | 064689 | 1 | Engine to primary chaincase. | $4.35 | View |
| 7 | Outer Primary Chaincase | 064691 | 1 | With timing plate. | |||
| 8 | ![]() |
Crossover Shaft Bush | 065185 | 1 | In outer primary chaincase. | $34.00 | View |
| 9 | ![]() |
Gear Lever Shaft Bush | 066189 | 1 | In outer primary chaincase. | View | |
| 10 | ![]() |
Gear Lever Oil Seal | 065181 | 1 | On outer primary chaincase. | $4.60 | View |
| 11 | ![]() |
Chaincase Timing Degree Plate | 064694 | 1 | $9.90 | View | |
| 12 | ![]() |
Self Tapping Screw | 060787 | 2 | $0.45 | View | |
| 13 | ![]() |
Chaincase Drain Plug | 140101 | 1 | 1/4" UNF x 1/2" long. | $0.50 | View |
| 14 | ![]() |
Drain Plug Sealing Washer | 064061 | 1 | 1/4" fibre. | $0.35 | View |
| 15 | ![]() |
Primary Chaincase Inspection Cap | 060388 | 1 | Large. | $24.00 | View |
| 16 | ![]() |
Chaincase Inspection Cap O-Ring | 062581 | 1 | Large. | $0.55 | View |
| 17 | ![]() |
Timing Inspection Cap | 060659 | 1 | Small. | $21.95 | View |
| 18 | ![]() |
Timing Inspection Cap O-Ring | 062580 | 1 | Small. | $0.55 | View |
| 19 | ![]() |
Chaincase Oil Level Plug | 062582 | 1 | 3/8" UNF, slotted. | $17.60 | View |
| 20 | ![]() |
Oil Level Plug O-Ring | 062583 | 1 | $0.55 | View | |
| 21 | ![]() |
Chaincase Outer Gasket | 065534 | 1 | Standard 0.5mm thick. | $24.00 | View |
| 22 | ![]() |
Chaincase Outer Cover Screw | 065533 | 10 | 1/4" Whitworth x 1-1/4" long. | $0.85 | View |
| 23 | ![]() |
Chaincase Steady | 066257 | 1 | Chaincase centre stud. | $15.00 | View |
| 24 | ![]() |
Washer | 602322 | 1 | 3/8" plain. | $0.30 | View |
| 25 | ![]() |
Locknut | 140403 | 1 | 3/8" UNF Nyloc. | $1.45 | View |
| 26 | ![]() |
Chaincase Centre Stud Nut | 141303 | 1 | 3/8" UNF Nyloc. | $1.45 | View |
| 27 | ![]() |
Primary Chain Tensioner Body | 064718 | 1 | View | ||
| 28 | ![]() |
Primary Chain Tensioner Plunger Assembly | 065341 | 2 | Plunger assembly. | View | |
| 29 | ![]() |
Chain Tensioner Cover Plate | 066001 | 1 | $19.80 | View | |
| 30 | ![]() |
Washer | 602418 | 1 | 5/16" spring washer. | $0.45 | View |
| 31 | ![]() |
Nut | 140302 | 2 | 5/16" UNF. | $0.30 | View |
| 32 | ![]() |
Chain Tensioner Body Stud | 064717 | 2 | $4.04 | View | |
| 33 | ![]() |
Stud | 063189 | 1 | 1/4" Whitworth x 1/2" long. | $2.85 | View |
| 34 | ![]() |
Washer | 602417 | 1 | 1/4" spring washer. | $0.30 | View |
| 35 | ![]() |
Nut | 060355 | 1 | 1/4" UNC. | $0.30 | View |
| - | ![]() |
Chain Tensioner Body Gasket | 066570 | 1 | $5.40 | View | |
| - | ![]() |
Allen Screw Set SS | 065533K | AR | Complete set, UNC/BSF, stainless steel. | $52.00 | View |