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Crowley Marine: serving boaters for over 40 years Crowley Marine: serving boaters for over 40 years
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AccuMix® Fuel Pump Kit P/N 434727

Safety Considerations

These instructions will alter you to certain things you should do very carefully. If you don't, you could...

  • hurt yourself or bystanders
  • hurt boat operator, passengers
  • damage the machinery

Safety symbol, , appears next to information important to prevent you and others from being hurt.

Note symbol, Note, appears next to information important to keep machinery from being damaged.

IMPORTANT: The important safeguards and instructions appearing in these directions cannot cover all possible conditions or situations that occur. The person following these directions must use common sense, caution and care.

Product Reference & Illustration

When reference is made to brand name, product or specific tool, an equivalent product may be used in place of the referred to product. Substitute products used must have equivalent characteristics, including type, strength, and material. Incorrect substitution may result in product malfunction and possible injury to the operator and/or passengers.

All photographs and illustrations used may not necessarily depict actual models or equipment, but are intended only for reference. Specifications used are based on the latest product information available at the time of publication.


This kit contains a higher capacity fuel pump that is necessary when using the AccuMix® oil injection system. This kit is for El (1991) and newer recreational 5 thru 8 model motors.

To the Installer and the Owner INSTALLER:  Give these instructions to the owner. OWNER: Keep these installation instructions with your Operator's Manual. They contain part numbers for future service of this product.

Check contents of kit. Read installation instructions completely before starting work.

Ref. P/N Name of Part Qty.
1 333385 Inlet Hose 1
2 320107 Tie Strap 4
3 336236 Outlet Hose 1
4 434728 Fuel Pump 1
5 328717 Screw 2

Loosen fuel tank cap. Disconnect tank hose from motor.

Cut tie straps securing fuel hoses to carburetor (A) and to lower motor cover connector (B).

Remove and discard screws, fuel pump, and hoses. Save pulse gasket (C).

Install inlet hose (1) on lower motor cover fuel fitting (D) and secure with tie strap (2).

[5] [6]
Install outlet hose (3) on carburetor (E). Connect hose (3) to fuel pump (4). Secure hose ends with tie straps.

Secure fuel pump and original gasket (A) with screws (5).

Secure inlet hose (1) to inlet cap (B) with tie strap. Tighten knurled screw (C) to secure inlet cap.

Post Installation Test

Connect tank fuel hose to motor. Squeeze primer bulb until a definite resistance is felt. Check pump inlet hose (1) and pump inlet cap (D) for leaks. Check pump outlet hose (3) for leaks. Repair any leaks before using motor.

0434727 - Fuel Pump Kit

Flat $3.95 Shipping on ALL parts orders

We offer shipping flat $3.95 shipping on ALL parts orders. (Complete Engines, Lower Units and Sterndrives excluded). In addition orders over $89 have reduced cost express shipping available in checkout.

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