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Kohler K321

Kohler K321
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OWNER’S
MANUAL
MODELS
K241/ K301
(10 hP)
(12 hp)
K321,& K341
(14 hp)
operating & maintenance
instructions
(16 hP)
Congratulations -
You have selected a fine four-cycle, single cylinder, air-cooled engine. Kohler designs long
life strength and on-the-job durability into each engine. . .
making a Kohler engine dependable.. .dependability
you can count on. Here are some reasons why:
0
Kohler engines are easy to service. All routine service areas (like the points, condenser, air cleaner, spark
plug, and carburetor) are easily and quickly accessible.
L
0
Parts subject to the most wear and tear (like the cylinders, crankshafts, and camshaft) are made from
precision formulated cast iron. Because the cast iron cylinders can be rebored, these engines can last even
longer.
0
Every Kohler engine is backed by a worldwide network of over 10,000 distributors and dealers. Service
support is just a phone call away. Call I-800-544-2444 (U.S. & Canada) for Sales & Service assistance.
To keep your engine in top operating condition, follow the maintenance procedures in this manual.

Other manuals for Kohler K321

Questions and Answers:

Kohler K321 Specifications

General IconGeneral
Fuel TypeGasoline
Cooling SystemAir-cooled
Max RPM3600 RPM
Governor TypeMechanical
Engine TypeSingle cylinder, 4-stroke
Displacement521 cc
Power14 hp (10.4 kW) @ 3600 RPM
Starter TypeElectric
Ignition SystemBattery
Bore x Stroke3.50 x 3.25 inches
LubricationFull pressure

Summary

General Safety Precautions

Fuel Safety Warnings

Gasoline is flammable; store and handle carefully to prevent fires and burns.

Rotating Parts Hazards

Keep body parts away from moving parts during operation to prevent injury.

Hot Surface Warnings

Engine components get extremely hot; avoid touching during or immediately after operation.

Electrical Shock Hazards

Avoid touching electrical wires or components while the engine is running to prevent shock.

California Proposition 65 Notice

Engine exhaust contains chemicals known to cause cancer, birth defects, or reproductive harm.

Specific Safety Precautions

Accidental Start Prevention

Disconnect spark plug lead before servicing to prevent accidental engine starts.

Exhaust Gas Hazards

Engine exhaust contains poisonous carbon monoxide; avoid inhaling fumes in enclosed areas.

Battery Charging Safety

Batteries produce explosive hydrogen gas; charge in ventilated areas away from ignition sources.

Engine Components Identification

Engine Oil Recommendations

Recommended Oil Type and Viscosity

Use high quality detergent oil; select viscosity by temperature as per table.

SAE Viscosity Grades Table

Table showing recommended SAE viscosity grades based on expected temperature range.

Oil Container Logo Meaning

Symbol on oil containers identifies API service class and SAE viscosity grade.

Fuel Recommendations and Types

Gasoline Handling and Storage

Purchase and store gasoline in approved containers; use fresh fuel; do not overfill tank.

Approved Fuel Blend Types

Gasohol (10% alcohol) and MTBE (15%) blends are approved; other blends are not.

Engine Identification Number Location

General Operating Instructions

Pre-Start Checklist

Steps to check before starting: oil, fuel, cooling areas, and guards.

Cold Weather Starting Tips

Engine Starting Procedures

Starting Procedures: Cold vs. Warm Engines

Setting throttle and choke based on engine temperature.

Starting Methods: Rope and Electric

Step-by-step instructions for starting with rope pull or electric starter.

Engine Stopping Procedure

Battery Requirements

Engine Angle of Operation Limits

Cooling System Maintenance

Required Maintenance Schedule

Procedure: Check Engine Oil Level

Optional Oil Sentry System

Procedure: Change Engine Oil

Air Cleaner Servicing Overview

Air Cleaner Housing Components

Service Air Cleaner Precleaner

Service Air Cleaner Paper Element

Cleaning Air Intake and Cooling Areas

Procedure: Check Spark Plug

Spark Plug Gap Adjustment Guide

Battery Charging Safety Precautions

Fuel Filter Inspection and Replacement

Reduction Gear Unit Oil Level Check

Carburetor Troubleshooting and Adjustments

Kohler Carburetor Adjustment Guide

Kohler Carburetor Preliminary Settings

Initial settings for low idle and high idle fuel adjusting needles for various models.

Kohler Carburetor Warm-up Procedure

Starting and running the engine at half throttle for 5-10 minutes before final settings.

Kohler Main Fuel Needle Adjustment

Adjusting the main fuel needle for adjustable jet carburetors.

Kohler Low Idle Speed Adjustment

Setting the low idle speed to 1200 RPM using the adjusting screw.

Kohler Low Idle Fuel Needle Adjustment

Adjusting the low idle fuel needle to achieve optimal engine speed.

Walbro Carburetor Adjustment Guide

Walbro Carburetor Preliminary Settings

Initial settings for low idle and main fuel needles for Walbro fixed and adjustable jet carburetors.

Walbro Main Fuel Needle Adjustment

Adjusting the main fuel needle for optimal performance.

Walbro Low Idle Speed Adjustment

Setting the low idle speed to 1200 RPM for Walbro carburetors.

Walbro Low Idle Fuel Needle Adjustment

Adjusting the low idle fuel needle for optimal low idle fuel performance.

Troubleshooting Common Engine Problems

Engine Storage Procedure

Ordering Replacement Parts

Major Repair Service

Engine Model Designation Explained

Technical Engine Specifications

Model Specific Technical Data

Table detailing bore, stroke, displacement, power, weight, and oil capacity for different models.

Spark Plug and Ignition Specifications

Details on spark plug gaps, sizes, types, and breaker point gaps.

Limited 1 Year Engine Warranty Details

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