Page 2 - one that possesses special significance.; Contents; Specifications
2 The Shindaiwa H4 series of hand-held power equipment is designed and built to deliver superior performance and reliability without compromise to quality, comfort, safety or durability. Shindaiwa engines represent the leading edge of high-perfor- mance engine technology, delivering exceptionally hi...
Page 3 - Warning and Operational Labels; Work Safely; You must be physically and mentally fit to operate this unit; Safety; the influence of alcohol, drugs, medication or any other; Moving parts can amputate fingers or cause; ALWAYS; that can start fires around dry vegetation. This; extend trimming line beyond the length specified; ways wear gloves when handling
3 WARNING! Engine exhaust IS HOT, and contains Carbon Monoxide (CO), a poison gas. Breathing CO can cause uncon- sciousness, serious injury, or death. Exhaust can cause serious burns. ALWAYS position unit so that exhaust is directed away from your face and body. Warning and Operational Labels Read a...
Page 4 - Safety and Operation Information Labels: Make sure
4 The Properly Equipped Operator Always wear a harness when operating the unit . It adds comfort and helps ensure safety by limiting movement fore and aft. When the harness is adjusted properly, the unit should balance with the cutting attachment parallel to the ground. Always operate with both hand...
Page 5 - Be Aware of the Working Environment; Product Description; Using the illustration as a guide, familiarize your-
5 Be Aware of the Working Environment Avoid long-term operation in very hot or very cold weather. Make sure bystanders or observers outside the 15 meter (50 feet) “danger zone” wear eye protection. Be extremely careful of slippery terrain, especially during rainy weather. If contact is made with a h...
Page 6 - Diaphragm-type carburetor; Assembly; Prior to Assembly; followed as listed in the Maintenance Section of this manual.
6 Specifications Engine Name T344 Engine Type 4-cycle, vertical cylinder, air cooled Dry Weight (Without guard and strap) 5.9 kg/13.0 lb. Bore x Stroke 38 x 30 mm (1.5 x 1.2 in.) Displacement 34 cc (2.1 cu. in.) Fuel/Oil Ratio 50:1 with *ISO-L-EGD or JASO FD class engine oil Fuel Tank Capacity 700 m...
Page 7 - Place the shield on the bottom of the bearing housing flange.; Install trimmer head; See Maintenance Section for Loading Trimmer Line.; Remove nylon line head; CAUTION
7 NOTE: The plastic shield is for use with the Nylon Line Head only. Install Metal Shield when using plastic or metal blades. Remove plastic threaded shaft sleeve and adapter plate (C) from PTO 1. shaft (A). Place the shield on the bottom of the bearing housing flange. 2. Place shield plate (B) on s...
Page 8 - Adjust throttle lever free play; and illustrations that follow.; Front handle installation; Label shows minimum spacing for front handle location.
8 Throttle lever free play 4-6 mm (3/16”-1/4”) Throttle Free Play Adjust throttle lever free play The throttle lever free play should be approximately 4 - 6 mm (3/16” - 1/4”). Make sure that the throttle lever operates smoothly without binding. If it becomes necessary to adjust the lever free play, ...
Page 9 - Fuel Requirements; NOT; Mixture Oil; Mixing Fuel; Examples of 50:1 mixing quantities; Shindaiwa Red Armor; engine oil may be mixed at 50:1 ratio for application
9 Handling Fuel DANGER Fuel is VERY flammable. Use extreme care when mixing, storing or handling or serious personal injury may result. • Use an approved fuel container. • DO NOT smoke near fuel. • DO NOT allow flames or sparks near fuel. • Fuel tanks/cans may be under pressure. Always loosen fuel c...
Page 10 - Filling the fuel tank; away from sparks and flames.; After use
10 Filling the fuel tank WARNING! Minimize the Risk of Fire Place the unit on a flat, level surface. 1. Clear any dirt or other debris from around the fuel filler cap. 2. Remove the fuel cap, and fill the tank with clean, fresh fuel. 3. Reinstall the fuel filler cap and tighten firmly. 4. Wipe away ...
Page 11 - Starting the Engine; pressing the primer bulb will not flood the engine with fuel.
11 Slide the ignition switch to the “ON” position. 1. Set the throttle trigger to the “fast idle”: 2. Slide ignition to ON ON Throttle Trigger Make sure the attachment is clear of obstructions! ...and pull recoil starter handle upward Hold the unit firmly... Close choke Set the choke lever to the CL...
Page 12 - use a cracked or warped cutting attachment replace it with a; Checking Unit Condition; Starting A Flooded Engine
12 Slide ignition to OFF OFF NEVER operate the unit with the cutting attachment shield or other protec- tive devices removed!Use only authorized Shindaiwa parts and accessories with your Shindaiwa trimmer. Do not make modifications to this unit without written approval from Shindaiwa, Inc. ALWAYS ma...
Page 13 - Operation; WARNING; directed away from your face and body.; Cutting grass with a trimmer head; Manual; Engine Operating Speeds
13 Operation WARNING Engine exhaust IS HOT, and contains Carbon Monoxide (CO), a poison gas. Breathing CO can cause uncon- sciousness, serious injury, or death. Exhaust can cause serious burns. ALWAYS position unit so that exhaust is directed away from your face and body. CAUTION! Do not push the ro...
Page 14 - Maintenance; Prior to each work day, perform the
14 Maintenance WARNING! Before performing any main- tenance, repair, or cleaning work on the unit, make sure the engine and cutting attachment are completely stopped. Disconnect the spark plug wire before performing service or maintenance. WARNING! Non-standard accessories, cut- ting attachment, or ...
Page 15 - (more frequently in dusty; Gear Housing
15 spark plug gap--all models Components of air filter Filter element Prefilter Loosen fasteners Remove the cover of the air filter Maintenance (continued) 10-Hour maintenance (more frequently in dusty conditions) Remove the air filter cover by loos - 1. ening the cover screw(s) and lifting. Remove ...
Page 16 - Remove and replace the fuel filter; fuel filter from inside the fuel tank.; 0 hour maintenance
16 Maintenance (continued) Remove and replace the fuel filter element. Use a hooked wire to extract the ■ fuel filter from inside the fuel tank. Inspect the fuel filter element. If it shows signs of contamination, replace with a genuine Shindaiwa replacement fuel filter element. Before reinstalling ...
Page 17 - Valve Adjustment; the ”Specifications” section or an
17 135-Hour Maintenance IMPORTANT! If a new gasket is not available and/ or the old gasket is not damaged, the old gasket may be reused. Never use cracked or damaged gaskets! Turn engine over several times, and 6. returnthe to TDC-compression. Recheck with proper feeler gauge to make sure clearance ...
Page 18 - Carburetor Adjustment; High Altitude Operation; If the engine is adjusted for operation; Spark Arrester Screen Maintenance
18 Engine Cover Screws Engine Cover Muffler Muffler Gasket Muffler Bolts Spark Arrester Screen Spark Arrester Cover Cover Screws With a 3 mm hex wrench remove the 1. engine cover screws and the engine cover. If the engine becomes sluggish and low on power, check and clean the spark arrester screen. ...
Page 19 - Idle Speed Adjustment; Long Term Storage; Gasoline stored in the carbure-; Trimmer head is now fully loaded and ready for operation.
19 Adjusting Engine Idle The engine must return to idle speed whenever the throttle lever is released. Idle speed is adjustable, and must be set low enough to permit the engine clutch to disengage the cutting attachment. WARNING! The cutting attachment must NEVER rotate at engine idle! If the idle s...
Page 20 - Troubleshooting Guide; ENGINE DOES NOT START OR HARD TO START
20 Troubleshooting Guide Vaporlock. Valve adjustment. Engine hot/heat soaked. Low fuel quality. Valve clearance too tight. Valve clearance too loose. Let cool completely and restart. Refill with fresh, clean unleaded gasoline with a pump octane of 89 or higher mixed with an air cooled engine oil tha...
Page 21 - What To Check; LOW POWER OUTPUT
21 Is the engine overheating? Engine is rough at all speeds. May also have black smoke and/or unburned fuel at the exhaust. Operator is over working the unit. Carburetor mixture is too lean. Improper fuel ratio. Fan, fan cover, cylinder fins dirty or damaged. Carbon deposits on the piston or in the ...
Page 22 - ADDITIONAL PROBLEMS; Symptom; Engine stops abruptly.; Top of engine is getting; Cutting attachment
22 ADDITIONAL PROBLEMS Poor acceleration. Clogged air filter. Clogged fuel filter. Lean fuel/air mixture. Idle speed set too low. Ignition switch turned of f. Fuel tank empty. Water in the fuel. Clogged fuel filter. Shor ted spark plug or loose terminal. Ignition failure. Piston seizure. Ground (sto...
Page 24 - PURCHASED REPAIR PARTS AND ACCESSORIES; ATTENTION ENGINE POWERED PRODUCT OWNERS; DISCLAIMER OF IMPLIED WARRANTIES
24 PURCHASED REPAIR PARTS AND ACCESSORIES • 90-day all applications ATTENTION ENGINE POWERED PRODUCT OWNERS This Shindaiwa engine powered product is a quality-engineered unit which has been manufactured to exact tolerances to provide superior performance. To help ensure the performance of the unit, ...
Page 26 - NOTES
Page 28 - Yamabiko Corporation; Copyright© 2010 By Echo, Incorporated; Servicing Information; Service; vides a direct link if we find it necessary to contact you.; Additional or Replacement Manuals; COM for updated information.
ECHO Incorporated. 400 Oakwood Road Lake Zurich, IL 60047-1564 U.S.A. Telephone: 1-877-986-7783 Fax: 1-847-540-8416 www.shindaiwa.com Yamabiko Corporation 7-2 Suehirocho 1-Chome, Ohme, Tokyo, 198-8760, Japan Phone: 81-428-32-6118 Fax: 81-428-32-6145 Copyright© 2010 By Echo, Incorporated All Rights R...