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Berkeley Jet Drive Model 12JF

berkeley logoDESCRIPTION: The Model 12JF Jet-Drive is constructed of a super-tough, high-strength, aluminum alloy, castings the finest and most serviceable materials available. Precision machined and hard-anodized, assembled with stainless steel fasteners, assures maximum performance with a minimum of maintenance. Dissimilar metals are protected from each other by inert insulators to retard corrosion. Using Berkeley's unique single stage, mixed flow, impeller, this unit gives maximum thrust per horsepower. The 12JF features a special built-in trimming device for precise boat attitude adjustments while underway. Adjustments may be made by either a single manual or electric control. A popular unit with boat manufacturers because of its ease of installation in specially molded hulls.

APPLICATION: Designed for fast, simple installation in specially molded hulls measuring 14 to 24 feet in overall length, with a gross weight of not over 5,000 pounds per unit, including passengers and gear.

FEATURES: No intake adapter or transom housing required for simple bolt in installation in specially molded hulls. Special underway trimming device for correcting boat attitude. Entire unit located outside the hull, saving five inches. Lighter weight, 40 lbs. less than the 12JC. Only one rotating element, the shaft and impeller assembly. A single stage, enclosed, mixed flow, impeller available in aluminum or stainless steel, machined to match horsepower involved. Replaceable, insulated impeller wear ring, machined to close tolerances for minimum bypass and high pump efficiency. Strong self-cleaning finger-type intake grate. Readily accessible and serviceable stuffing box-type shaft seal. Heavy duty, grease lubricated, ball-type, thrust bearing, isolated and sealed for protection from accidental water damage. Easily accessible, outside the hull, hand hole for impeller clean out in the unlikely event of clogging. Long life oil lubricated, sleeve-type, tail bearing, sealed from the water. Smooth working steering nozzle and reverse bucket for effortless steering in forward and reverse with low, side-mounted, controls. Nozzle "0' ring seal assures minimum spray. Long blade rudder for positive coat handling at low speeds with no appreciable loss in performance at higher speeds.

POWER REQUIREMENTS: Approximately 10 to 27 pounds gross boat weight requires 1 HP. Higher or lower speeds will be obtained as gross weight varies. Weight distribution, hull length and design are other factors affecting total boat performance. The standard aluminum alloy impeller is used with engines up to 400 HP; over 400 HP, a stainless steel impeller is recommended.

OPTIONAL EQUIPMENT: Stainless steel impeller, shift-throttle controls, instrument panels, gauge clusters and wiring harnesses, intake fins and transom trim tabs, hull insert or mold plug.

DIMENSIONS / WEIGHT: Net weight approximately 85 pounds. Dimensions may vary and are for estimating only. Refer to catalog installation drawings for complete dimensions.

  • Includes Intake Grate and all Necessary Fastenings, Long Blade Rudder. Shift 43C Cable and Trim uses 43BC Cable. Requires addition of manual or electric Trim Kit. Specify Impeller Size.
  • 12JF with Aluminum "A" Impeller Catalog Number 0203-B-07341


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Sym. Description Qty. Req. Part No. Sym. Description Qty. Req. Part No.
1 Reverse Bucket - 12JF 1 150-L05050 50 Hex Cap Screw, 5/16"-18 x 1" Lg. 6 150-S23540
2 Shoulder Bolt 1 150-S18422 51 Intake Grate Retainer 1 150-M5928
3 Shaft, 3/4" OD x 1-9/16" Long 4 150-S10825 52 Intake Grate 1 150-L04411
4 Reverse Link 1 150-S18299 53 Machine Screw, Flat Head 1/4"-20 x 1-1/4" Lg. 4 150-S25669
5 Nyliner Bearing 6 150-S14477 54 Machine Screw, Flat Head. 5/16"-18 x 3/4" Lg. 2 150-S25679
6 Hex Nut, 5/16"-18 21 150-S15981 55 Cavitation Plate 1 150-S16567
7 Shoulder Bolt 1 150-S18297 56 Flat Head Machine Screw, 5/16"-18 x 2" Lg. 2 150-S25685
8 Hex Socket Cap Screw, 5/16"-18 x 1" Long 2 150-S25959 57 Cavitation Plate Bracket 1 150-M5840
9 Spring Lock Washer, 5/16" 22 150-S23088 58 Retaining Ring 1 150-S14478
10 Steering Nozzle 12JF 1 150-L05049 59 Ball Bearing 1 150-S14063
11 Hex Cap Screw, 5/16"-18 x 1-3/4" Long 10 150-S23546 60 Shaft Seal Sleeve 1 150-S14379
12 Shaft with Pulling Tap, 3/4" 0.D. x 1-9/16" Long 2 150-S18621 61 Pump Shaft, 1-3/8", Ten Tooth Spline 1 150-M5356
13 Nozzle "O" Ring 1 150-S17737 62 Impeller Key, 1/4" x 2-3/4" Lg. 1 150-S14482
14 Tilt Ring 1 150-L04962 63 Impeller Self-Locking Nut, 1-1/4"-12 1 150-S12005
15 Bowl End Cap 1 150-S09850 64 Morse Clamp and Shim 2 150-S18429
16 Square Head Pipe Plug 1/8" NPT 2 150-S13883 65 Round Head Machine Screw No. 10-32 x 5/8" Lg. RHM 2 150-S24472
17 Bowl, 12JF 1 150-H03155 66 Steering Rudder 1 150-M06493
18 Hex Cap Screw, 1/2"-13 x 1-1/4" Lg.  8 150-S23621 67 Hex Cap Screw, 5/16"-18 x 1-1/4" Lg. 2 150-S23542
19 Bowl Glacier Bearing 2 150-S14483 68 Control Cable Seal Housing 2 150-S16255
20 Oil Seal, Bowl 1 150-S14476 69 Control Cable Seal "O" Ring 2 150-S14929
21 Aluminum Impeller, Standard 1 150-L02507 70 Control Cable Seal Bearing 4 150-S16254
Commercial Standard Stainless Steel Impeller 150-L05021 71 Control Cable Seal Retainer 2 150-S16256
22 Bowl Gasket 1 150-S09017 72 Round Head Machine Screw, 1/4"-20 x 2" Lg. 6 150-S24507
23 Wearing Ring 1 150-S10125 73 Steering Cable Retainer for Morse, Rideguide and Teleflex Steering 1 150-S16273
24 Wearing Ring Insulator 1 150-S10068 Steering Cable Retainer for Steermaster Steering 150-S16274
25 Round Head Machine Screw, 1/4"-20 x 1-1/4" Long  3 150-S24504 74 Hose Clamp 1 150-S16216
26 Cooling Water Pipe Retainer 1 150-S15904 75 Control Cable Bellows 3 150-S16173
27 Cooling Water Pipe "O" Ring 1 150-S16022 76 Hose Clamp 3 150-S16215
28 Cooling Water Pipe 1 150-M5773 77 Lock Washer, No. 10 4 150-S23085
29 Hex Nut, 1/4"-20 9 150-S23481 78 Hex Nut, No. 10-32 2 150-S23479
30 Spring Lock Washer, 1/4" 9 150-S23087 79 Plain Washer, 3/8" Nom. 4 150-S23063
31 Flat Washer, 1/4" x 1/2" OD 9 150-S16401 81 Steering Extension 1 150-M6529
32 Cooling Water Pipe Retainer Back-up Plate 1 150-S15905 82 Hex Cap Screw, 3/8"-24 x 1-1/4" Lg. NH C/S 1 150-S32366
33 Groove Pin, 5/16" x 1-1/4" Lg. 2 150-S14479 83 Control Cable Clevis 2 150-S17843
34 Rod End 2 150-S10907 84 Shoulder Bolt, 1/2" 1 150-S18379
35 Plain Washer, 5/16" Nom. 22 150-S23068 85 Nyliner Bearing 2 150-S18428
36 Wing Nut, 5/16"-18 2 150-S16117 86 Pivot Arm 1 150-S18378
37 Hand Hole Clean-out Cover 1 150-M6098 87 Nyliner Bearing 4 150-S13865
38 Hand Hole Clean-out Cover "O" Ring 1 150-S13734 88 Swivel Pin 2 150-S16344
39 Packing Ring, 5/16" Sq. 4 150-S08287 89 Cotter Pin, 1/8" x 1/2" 2 150-S26618
40 Hex Cap Screw, 3/8"-16 x 2" Lg. HH C/S 2 150-S23574 90 Clevis Pin, 5/16"  2 150-S16350
41 Packing Gland, Split 1 150-S12727 91 Hex Cap Screw, 3/8"-24 x 1-1/2" Lg. 1 150-S32365
42 Self-Locking Hex Nut, 3/8"-16 2 150-S26573 92 Hex Nut, 3/8"-24 1 150-S23485
43 Grease Fitting, 1/4"-28 1 150-S14480 93 Hex Nut, Thin, 7/8"-14 1 150-S16347
44 Suction Piece 1 150-H02715 94 Washer, Plain, 7/8" SAE 2 150-S28272
45 Suction Piece Oil Seal 1 150-S14380 95 Cable Spacer 1 150-S19809
46 Suction Piece to Bearing Cap Gasket 1 150-S09018 96 Round Head Machine Screw 10-32 x 7/8" Lg. 2 150-S24474
47 Bearing Cap 1 150-S15338 97 Slotted Hex Nuts 2 150-S32400
48 Bearing Cap Oil Seal 1 150-S14475 98 Cotter Pins 2 150-S26619
49 Hex Socket Cap Screw, 5/16"-18 x 1-1/4" Lg. 4 150-S26151 99 5/16"-18 x 1-1/2" Lg. HH C/S Cap Screw 4 150-S23544