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EX Training

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by

Kelsey Anderson

on 20 July 2015

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Transcript of EX Training

EX TRAINING
EX Series
Objectives
Engine Specification System
OHC vs. OHV
Warranty
Product Label
Subaru Parts
System

Combustion Chamber
High Power & Torque
4.3-14hp OHC
Specification Number
Advanced Combustion Chamber
Parts numbering scheme:
•High Combustion Ratio

•Increased volumetric efficiency–
More power
Aware of unique features & benefits
Competent in basic maintenance
& service

Demonstrate troubleshooting

Engine Warranty

Submitting Claims

Pre-Approval for
Repairs over $100/$200

What is Covered?

What is Excluded?
Submit warranty claims directly to Subaru Power via the online warranty website
$100 for single cylinder engines
$200 for twin cylinder engines
Any work that involves internal engine parts will need pre-approval
Covers defects in material and workmanship
Fuel system problems caused by failure to use fresh fuel
Failure to properly prepare the machine prior to any period of non-use over a month
Contaminants in the fuel system
Improper fuel
Lack of lubrication
Failure due to dirt entering the engine
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Indicates the original engine usage
Tells you the type of part
224-62342-10
Identifies the model and the configuration
11 digits, 5 for the model and 6 for the spec
The spec number is on the Product Label
Label located on the side of the blower housing
Optimized Combustion Chamber
Pent Roof Combustion Chamber
Intake & Exhaust Valves positioned for optimum performance
Electronic Low Oil Shut-Off
Easy Start
Periodic Maintenance Schedule Table
Air Filters
Charging Systems
Rotating Screen
Starting
System

Flywheel
Cold Weather Kit
Easy to pull

Advanced mechanical compression
release system

OHC design advantage
* Initial oil change should be performed after first twenty (20) hours of operation. Thereafter change oil every hundred (100) hours. Before changing oil, check for a suitable way to dispose of old oil. Do not pour it down into sewage drains, onto garden soil or into open streams. Your local zoning or environmental regulations will give you more detailed instructions on proper disposal.

** As to the procedures for these items, please refer to the SERVICE MANUAL.
Recoil Start
With internal magnets for charging systems
EX17, EX21, EX27, EX30
Standard non-rotating recoil assembly
Special rotating screen and recoil assembly
EX27 rotating screen kit
EX35 & 40 rotating screen kit
15 watt
40 watt
15 watt charging system
200 watt regulator rectifier
200 watt (16 amp) stator & flywheel magnet ring
Optional Washable Air Filters
•Fits most popular models

•EX13, EX17, EX21, EX27 with top mount 2 stage air cleaner

•Wash in soap & water, rinse, drip dry and spray with light oil
Cooling System
Engine Oil
Ignition System
Governor Internal Components
Features
Superior Lubrication
Oil Drain
Fuel Tank
• Check oil with dip stick not screwed in
• Use 4-stroke automotive detergent oil of API service class SE or higher
• Oil change interval: after 20 hours initially, then every 100 hours
Fuel Tank Capacity:
Engines shipped from our factory are without oil.
Before starting the engine, fill with oil. Do not overfill.
Flywheel Magneto Ignition
Fuel Tank Cap
Fuel
Filter
Fuel Tank Filter -
Bottom of tank
Fuel Shut Off Valve
Carburetor Drain Screw
Under Crankcase
Head Cooling
Inside Crankcase
Ignition Coil
Stop Switch in Ignition
Sparkplug
Lever
Spring
Governor lever on the outside of the engine
Internal flyweights and governor gear
Features
Governor Adjustment
Oil Change
Urethane Foam Element Type
Air Cleaner
Pre-Cleaner Type
Paper Element Cleaning
• Governor rod and rod spring

• Governor lever

• Governor shaft

Continued
Continued
Materials
•EX Engines
•Subaru Tool Kit
•Detergent
•Plastic Bag
•Oil
Basic Service
Muffler with cover and deflector
Spark Arrestor
Wash in mild detergent
Squeeze the element
Lightly oil the element
Squeeze out excess oil
Clean the urethane foam every 50 hours
• Clean the elements in the same way as Dual Element Type (Urethane Foam and nonwoven Cloth elements)

• Wash the dust cup of pre-cleaner in water

• Install after drying
Clean by tapping gently to remove dirt and blow off dust
• Clean the paper element every 50 hours

• NEVER
use oil
Initial oil change: after 20 hours of operation
Thereafter: every 100 hours of operation
Always use the best grade oil. Contaminated oil, poor quality oil, and shortage of oil can cause damage to the engine or shorten the engine life.
Stop the engine and loosen the drain plug
Refill
Drain the used oil
Photos
Is there enough compression?
Is there a strong spark across the electrode?
Questions?
Is the spark plug wet with gasoline?
Thank You!
Inspect spark plug electrode condition

NGK FAQ's
Recommended Spark Plug
Is the stop switch in the ON position?
Remove and inspect the spark plug. If the electrode is fouled, clean or replace it with new one.
Remove the spark plug and connect it to the plug cap. Pull the starter handle while grounding spark plug against the engines body. Try with a new spark if the spark is weak or there is no spark. The ignition system is faulty if there is no spark with a new spark plug.
• Wipe out spilled fuel carefully before testing. Place spark plug as far away from spark plug hole as possible.
• Do not hold spark plug by hand while pulling recoil starter.
WARNING
Is the fuel shut off in the open position?
Choke and pull the starter handle five or six times. Remove the spark plug and check if its electrode is wet. If the electrode is wet, fuel is being supplied to your engine.
When the electrode is dry, check to see why there is no fuel.
If the engine still does not start with fuel, try using fresh fuel.
Pull the starter handle slowly and check if resistance is felt.
If little force is required to pull the starter handle, check if the spark plug is tightened firmly.
If the spark plug is loose, tighten it.
How to diagnose and treat common small engine problems

Warranty
EX engines- Limited 5 year warranty
Flywheel Fan View
Main Bearing View
Full transcript