Checking The Pinion And Forward Gear; Checking The Bearing; Checking The Drive Shaft; Checking The Lower Case - SELVA MARINE Blue Whale 250 EFI Service Manual

LOWR
2. Remove the needle bearing from the
lower case.
NOTE:
Since the diameter of the passage in the
lower case and the diameter of the special
service tool 3 are both 40 mm (1.57 in), the
special service tool may not fit into the lower
case. In that case, use a special service tool
with a smaller diameter.
Ball bearing attachment 3:
90890-06655
Driver rod LL 4: 90890-06605
Checking the pinion and forward
gear
1. Check the teeth of the pinion, and the
teeth and dogs of the forward gear.
Replace if cracked or worn.

Checking the bearing

1. Check the bearings. Replace if pitted or if
there is rumbling.

Checking the drive shaft

1. Check the drive shaft. Replace if bent or
worn.
2. Measure the drive shaft runout.
6-15
Lower unit
Runout limit: 0.2 mm (0.008 in)

Checking the lower case

1. Check the skeg and torpedo. Replace
the lower case if cracked or damaged.

Assembling the lower case

1. Install the original shim(s) and taper roller
bearing outer race.
NOTE:
• Be sure to select the forward gear shim(s) if
replacing the lower case or taper roller
bearing assembly. Select the propeller
shaft shim if replacing the forward gear.
• To select the shims, see "Shimming (regu-
lar rotation model)."
Bearing outer race attachment 1:
90890-06658
Driver rod LL 2: 90890-06605
2. Install the needle bearing into the lower
case.
S6P26210
6P23H11