Kohler Vertical Crankshaft Engine CV490

Remove the wing nut and air cleaner element

Remove the precleaner from the paper element, if equipped

Gently tap the flat side of the paper element to dislodge dirt

Is the paper element dirty, bent, or damaged?

Replace with a genuine Kohler element if necessary

Inspect the rubber seal (sleeve) on the stud for wear or damage

Replace the rubber seal if it is worn, damaged, or questionable

Precleaner Removal and Cleaning

Remove the precleaner from the paper element

Wash the precleaner in warm water with detergent

Rinse the precleaner thoroughly until all traces of detergent are eliminated

Squeeze out excess water (do not wring)

Allow the precleaner to air dry

Saturate the precleaner with new engine oil

Is the electrolyte level below the recommended level?

Add distilled water to maintain the recommended level

Ensure the battery is not overfilled

Keep the cables, terminals, and external surfaces of battery clean

Wash the cables, terminals, and external surfaces with a baking soda and water solution

Rinse thoroughly with clear water

Remove the starter from the engine and remove the dust cover.

Hold the drive pinion in a vice with soft jaws when removing and installing the stop nut.

Remove the stop nut, stop gear spacers, anti-drift spring, dust cover spacer, and drive pinion.

Clean the splines on drive shaft thoroughly with solvent and dry them.

Apply a small amount of Kohler electric starter drive lubricant to the splines.

Apply a small amount of Loctite® No. 271 to the stop nut threads.

Install the drive pinion, dust cover spacer, anti-drift spring, stop gear spacer, and stop nut.

Torque the stop nut to 17.0-19.2 N·m (150-170 in. lb.).

Drain the oil from the engine crankcase.

Remove the oil filter drain plug (where applicable) located at the base of the oil filter adapter and allow the oil filter to drain.

Old Filter Removal and Preparation

Remove the old filter and wipe off the filter adapter.

Reinstall the oil filter drain plug and torque the drain plug to 7.3-9.0 N·m (65-80 in. lb.).

Place a new replacement filter in a shallow pan with the open end up.

Pour new oil in through the threaded center hole until it reaches the bottom of the threads and allow absorption.