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X7505120800
© 4/2015 ECHO Inc.
MAINTENANCE
WP-1000
Note: Every unit is run at the factory and the carburetor is set in compliance with emission regulations. In
addition, the carburetor is equipped with HI (A) and LO (B) needle adjustment limiters that prevent
settings outside acceptable limits.
Emisson Models with Limiter Caps
1. Before adjusting the carburetor, clean or replace the air filter and spark arrestor screen.
2. Fill pump housing with clean water.
3. Start engine and run for several minutes to reach operating
temperature.
4. Stop engine. Turn HI (A) speed needle CCW (counter
clockwise) to stop. Turn LO (B) speed needle midway
between full CCW and CW (clockwise) stops.
5.
Idle Speed Adjustment
Start engine and turn idle speed adjustment screw (C), until
until the engine speed reaches 3000 RPM.
6. Accelerate to full throttle for 2-3 seconds to clear excess fuel
from engine then return to idle. Accelerate to full throttle to
check for smooth transition from idle to full throttle. If engine
hesitates, turn LO (B) needle CCW an additional 1/8 turn and repeat acceleration. Continue adjusting
until smooth acceleration results.
7. Check HI (A) speed RPM at W.O.T. (Wide Open Throttle). HI speed RPM should be set to specifications
found on "Specifications" page of this manual.
8. Check idle speed and reset if necessary. If a tachometer is available, idle speed should be set to the
specification found on "Specifications" page of this manual.
Pump Casing
Should the pump become clogged with debris:
1. Disconnect the spark plug wire.
2. Remove the prime port plug (A) and drain plug (B) from the pump housing (C) and drain the water from
the pump.
3. Remove the four bolts (D) securing the pump housing to the
pump case (E).
4. Remove the pump housing, pump volute (F) and remove
any debris from the pump casing and pump volute.
5. Install the o-ring (G) taking care not to damage it (coat
o-ring with lithium base grease).
6. Install the volute and the pump housing to the pump casing.
Insert four bolts carrying handle and pump stand. Tighten
evenly in a crisscross fashion. (Do not over tighten, to
prevent case or cover deformation.)
7. Install the drain plug (B) in the pump housing.
8. Fill the pump with water through the prime port and check to insure that there is no leakage. Install prime
port plug.
Summary of Contents for WP-1000
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