Clarke — Fuel system priming (removing entrapped air)
Maintenance
From a Clarke operator's manual — check it applies to your exact model before use.
Applies to: Perkins 1000 Series engine
Procedure
- Make certain the condition that caused air to enter has been corrected. Do not attempt to loosen fuel injector lines to eliminate air.
- Operate the hand priming pump located on the bottom of the fuel lift pump on the engine's right side.
- Locate the air vent valve in the primary fuel filter base, slightly open it, and operate the hand primer until fuel is observed coming from the vent, then reclose.
- Continue to operate the hand primer but loosen the cap nut on top of the secondary fuel filter until the filter is full and fuel is observed; re-tighten.
- Start the engine by manual crank SW#1 or SW#2.
- If the engine fails to start or runs erratic, recheck all fuel lines, connections and filters.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Full service-parts list: Perkins 1000 Series engine →
Source: Clarke operator's manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.