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Berkeley Jet Drive Model 12JF

DESCRIPTION: 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, handhole 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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12JF PARTS #150-0203-B-07341

Sym. Qty Required Description Part No. Sym.   Qty Required Description Part No.
1 1 Reverse Bucket - 12JF 150-L05050 51   1 Intake Grate Retainer 150-M5928
2 1 Shoulder Bolt 150-S18422 52 1 Intake Grate 150-L4411
3 4 Shaft, 3/4" O.D. x 1-9/16" Long 150-S10825 53 4 Machine Screw, Flat Head 1/4"-20 x 1-1/4" Lg. 150-S25669
4 1 Reverse Link 150-S18299 54 2 Machine Screw, Flat Head. 5/16"-18 x 3/4" Lg. 150-S25679
5 6 Nyliner Bearing 150-S14477 55 1 Cavitation Plate 150-S16567
6 21 Hex Nut, 5/16"-18 150-S15981 56 2 Flat Head Machine Screw, 5/16"-18 x 2" Lg. 150-S25685
7 1 Shoulder Bolt 150-S18297 57 1 Cavitation Plate Bracket 150-M5840
8 2 Hex socket Capscrew, 5/16"-18 x 1" Long 150-S25959 58 1 Retaining Ring 150-S14478
9 22 Spring Lock Washer, 5/16" 150-S23088 59 1 Ball Bearing 150-S14063
10 1 Steering Nozzle 12JF 150-L05049 60 1 Shaft Seal Sleeve 150-S14379
11 10 Hex Capscrew, 5/16"-18 x 1-3/4" Long 150-S23546 61 1 Pump Shaft, 1-3/8", Ten Tooth Spline 150-M5356
12 2 Shaft with Pulling Tap, 3/4" 0.D. x 1-9/16" Lg. S18621 150-S18621 62 1 Impeller Key, 1/4" x 2-3/4" Lg. 150-S14482
13 1 Nozzle "O" Ring 150-S17737 63 1 lmpeller Self-Locking Nut, 1-1/4"-12 150-S12005
14 1 Tilt Ring 150-L4962 64 2 Morse Clamp and Shim 150-S18429
15 1 Bowl End Cap 150-S9850 65 2

Round Head Machine Screw No. 10-32 x 5/8" Lg. RHM

 150-S24472
16 2 Square Head Pipe Plug 1/8" NPT 150-S13883 66 1 Steering Rudder 150-M06493
17 1 Bowl, 12JF 150-H03155 67 2 Hex Capscrew, 5/16"-18 x 1-1/4" Lg. 150-S23542
18 8 Hex Capscrew, 1/2"-13 x 1-1/4" Lg.  150-S23621 68 2 Control Cable Seal Housing 150-S16255
19 2 Bowl Glacier Bearing 150-S14483 69 2 Control Cable Seal "O" Ring 150-S14929
20 1 Oil Seal, Bowl 150-S14476 70 4 Control Cable Seal Bearing 150-S16254
21 1

Aluminum Impeller, Standard

 150-L02507 71 2 Control Cable Seal Retainer 150-S16256
Commercial Standard S.S. Impeller 150-L5021 72 6 Round Head Machine Screw, 1/4"-20 x 2" Lg. 150-S24507
High Performance S.S. Impeller 150-L2535 73 1

Steering Cable Retainer for Morse, Rideguide and Teleflex

 150-S16273
22 1 Bowl Gasket 150-S9017

Steering Cable Retainer for Steermaster Steering

 150-S16274
23 1 Wearing Ring 150-S10125 74 1 Hose Clamp 150-S16216
24 1 Wearing Ring Insulator 150-S10068 75 3 Control Cable Bellows 150-S16173
25 3

Round Head Machine Screw, 1/4"-20 x 1-1/4" Long 

 150-S24504 76 3 Hose Clamp 150-S16215
26 1 Cooling Water Pipe Retainer 150-S15904 77 3 Lockwasher, No. 10 150-S23085
27 1 Cooling Water Pipe "O" Ring 150-S16022 78 4 Hex Nut, No. 10-32 150-S23479
28 1 Cooling Water Pipe 150-M5773 79 2 Plain Washer, 3/8" Nom. 150-S23063
29 9 Hex Nut, 1/4"-20 150-S23481 81 4 Steering Extension 150-M6529
30 9 Spring Lockwasher, 1/4" 150-S23087 82 1 Hex Capscrew, 3/8"-24 x 1-1/4" Lg. NH C/S 150-S328
31 9 Flat Washer, 1/4" x 1/2" O.D. 150-S16401 83 2 Control Cable Clevis 150-S17843
32 1 Cooling Water Pipe Retainer Back-up Plate 150-S15905 84 1 Shoulder Bolt, 1/2" 150-S18379
33 2 Groove Pin, 5/16" x 1-1/4" Lg. 150-S14479 85 2 Nyliner Bearing 150-S18428
34 2 Rod End 150-S10907 86 1 Pivot Arm 150-S18378
35 22 Plain Washer, 5/16" Nom. 150-S23068 87 4 Nyliner Bearing 150-S13865
36 2 Wing Nut, 5/16"-18 150-S16117 88 2 Swivel Pin 150-S16344
37 1 Handhole Clean-out Cover 150-M6098 89 2 Cotter Pin, 1/8" x 1/2" 150-S26618
38 1 Handhole Clean-out Cover "O" Ring 150-S13734 90 2 Clevis Pin, 5/16"  150-S16350
39 4 Packing Ring (EACH), 5/16" Sq. 150-S08287 91 1 Hex Capscrew, 3/8"-24 x 1-1/2" Lg. 150-S323
40 2 Hex Capscrew, 3/8"-16 x 2" Lg. HH C/S 150-S23574 92 1 Hex Nut, 3/8"-24 150-S23485
41 1 Packing Gland, Split 150-S12727 93 1 Hex Nut, Thin, 7/8"-14 150-S16347
42 2 Self-Locking Hex Nut, 3/8"-16 150-S26573 94 2 Washer, Plain, 7/8" SAE 150-S28272
43 1 Grease Fitting, 1/4"-28 150-S14480 95 1 Cable Spacer 150-S19809
44 1 Suction Piece 150-H2715 96 2 Round Head Machine Screw 10-32 x 7/8" Lg. 150-S24474
45 1 Suction Piece Oil Seal 150-S14380 97 2 Slotted Hex Nuts 150-S32400
46 1 Suction Piece to Bearing Cap Gasket 150-S9018 98 2 Cotter Pins 150-S26619
47 1 Bearing Cap 150-S15338 99 4 5/16"-18 x 1-1/2" Lg. HH C/S Capscrew 150-S23544
48 1 Bearing Cap Oil Seal 150-S14475 100 1 Plastic Rudder Kit 150-B-07486
49 4 Hex Socket Capscrew, 5/16"-18 x 1-1/4" Lg. 150-S26151        
50 6 Hex Capscrew, 5/16"-18 x 1" Lg. 150-S23540