Yamaha YZF-R125 Service Manual: Water pump

Water pump


Water pump


Installing the thermostat
1. Install: Thermostat NOTE: Install the thermostat with its breather hole "a" facing up. 2. Install: Copper washer Coolant temperature sensor CAUTION:Use extreme care when ...

Disassembling the water pump
1. Remove: Water pump seal "1" NOTE: Remove the water pump seal from the inside of the water pump housing "2". 2. Remove: Bearing "1" NOTE: Remove the bearing from the outside of ...

Other materials:

Checking the starter motor
1. Check: Commutator Dirt Clean with 600 grit sandpaper. 2. Measure: Commutator diameter "a" Out of specification Replace the starter motor. 3. Measure: Mica undercut "a" Out of specification Scrape the mica to the proper measurement with a hacksaw blade ...

Separating the crankcase
1. Remove: Crankcase bolts NOTE: Loosen each bolt 1/4 of a turn at a time, in stages and in the proper sequence as shown. A. Right crankcase B. Left crankcase 2. Turn: Shift drum segment NOTE: Turn the shift drum segment "1" to the position shown in the illustration. In this ...

Checking the radiator
1. Check: Radiator fins obstruction clean. Apply compressed air to the rear of the radiator. Damage  repair or replace. NOTE: Straighten any flattened fins with a thin, flat-head screwdriver. 2. Check: Radiator hoses Cracks/damage Replace. 3. Measure: Radiator cap ...

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