Service And Adjustments; Figure - Ariens Sno-Thro 939003-ST520E Owner's/Operator's Manual

Ariens snow thrower owner/operator manual

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Table Of Contents

Table of Contents

WARNING: AVOID INJURY. Read and

understand the entire Safety section before

proceeding.

SCRAPER BLADE

IMPORTANT: Damage to auger/impeller housing will

result if blade wears down too far.

Scraper blade is adjustable to compensate for wear.

To adjust scraper blade:

1. Tip unit back onto handlebar, support housing

and loosen nuts retaining blade.

2. Adjust runners to fully raised position (housing

closest to ground).

3. Reposition scraper blade flush with runners and

tighten lock nuts.

RUNNERS

Runners should be adjusted as conditions require

(Figure 11).

1. Position unit on a hard, flat, smooth level surface.

2. Adjust runners by inserting a spacer of desired

thickness under center of scraper blade, loosen

runner hardware, slide runners to flat surface.

Allow 1/8 in. (3 mm) between scraper blade and

hard smooth surfaces. Allow 1-1/4 in. (30 mm)

between scraper blade and uneven or gravel

surfaces. Retighten hardware.

NOTE: Keep housing level by adjusting runners

equally.

1. Runner

2. Runner Hardware

Figure 11

SHEAR BOLTS

IMPORTANT: Use only Ariens shear bolts for

replacement. Use of any other type of shear bolt may

result in severe damage to unit.

Occasionally a foreign object may enter the

auger/impeller housing and jam the auger, breaking

shear bolts (Figure 12) which secure the auger to the

shaft. This allows auger to turn freely on the shaft

preventing damage to gear drive.