Husqvarna Essential Maintenance and Lubrication for Chainsaws
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MAINTENANCE & LUBRICATION

Blade Shaft Drive Belt Tension: Drive Belt should be re-tensioned after first few hours of operation. Belt Drive Idler (MM) holds tension on Drive Belt.

Tools Required:

•13mm Wrench (Included with machine).

•3/8” (9.53mm) Drive Torque Wrench (Not Included)

•14mm Wrench (Not included with machine).

1.Use 13mm Wrench (U), to remove three (3) M8 bolts that attach Belt Guard (LL). Remove Guard (LL).

2.Use the 13mm & 14mm wrenches to slightly loosen the two (2) bolts that secure the Belt Drive Idler (MM) [bolts indicated by (2) arrows].

3.Attach Torque Wrench to square hole in Belt Drive Idler (MM).

4.Apply a torque to Drive Idler (MM) so that Drive Idler (MM) is forced against the Drive-Belt. Torque to the value shown in diagram 4.

5.Tighten center bolt (CB1) to hold Drive Idler (MM) in position, then tighten remaining bolt (CB2).

6.Reinstall Belt Guard (LL). Use 13mm Wrench (U), to tighten three (3) M8 bolts that attach Belt Guard (LL).

Governor Speed

It is critical that Governor and throttle on all internal combustion engines be adjusted properly. Engine speed is preset at factory for proper sawing speed. It is NOT normally necessary to change this setting. It should be periodically verified after machine is placed into service. To change the Governor setting, refer to the engine manual.

WARNING!

Overspeeding Diamond Blade (H) can result in blade breakage and/or personal injury to operator and bystanders! To assure proper Governor adjustment, determine correct blade shaft speed (RPM) from the adjacent chart. Follow engine manufacturer’s instruction procedure for Governor and throttle setting.

Blade Shaft & Engine Speed

Model

Blade Shaft

Engine

 

RPM

RPM

FS 513

2600

3600

FS 520

2600

3600

FS 524

2100

3600

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Contents FS 513, FS 520, FS Page Contents and Introduction Symbols and Decals Symbols and Decals Symbols and Decals Symbols and Decals 543 04 57-88SOUND Level 108dBA General use Safety InstructionsCalifornia Prop 65 Warning General Information Poison Exhaust GASDO’s and do NOT’s Safety Instructions Safety FirstDo not Page Water Tank / Lifting Point Support Holds Water Tank Parts Identification What is WhatDD. Engine Start Switch AAA BBB Assembly Blade Guard Front D Install Front Pointer aRe-Position Blade Depth Control Handle EE Torque Lifting Eye NUT to 83 N-m 61 lb-ft mini Mum Install Water Tank P if equippedAssembly Filling Water Tank Before Operation OperationRe-Locating the Blade Guard C If Required Parking Machine Parking Brake Engage See DiagramTransporting & Lifting Machine Lifting machine equipped with Water TankAll Models FS 520, FSParking Brake Dis-engage See Dia gram Gasoline Engine ModelsFitting the Diamond Blade H Starting and cutting with machine Starting FSFS 520 / FS 524 Remove Fuel in Engine Extended Periods of Non-Operation Two Weeks or GreaterFS 520 / FS Maintenance & LubricationReplacing Engine Air Filter S FS 520 / FS Engine Oil Checking Engine OilChanging Engine Oil Battery Maintenance FS 520 / FSModel Blade Shaft Engine Governor SpeedHydrostatic Transmission Belt WW Belt Tension Service of Hydrostatic Transmission TT MainteHydrostatic Transmission Belt and Sheave WearDiamond Blade Trouble Shooting Problem Cause & Action Trouble Shooting GuideEngine Will Not Start Cause Action Wiring Diagram FS QTY Description Wiring Diagram FS SWITCH, ENG. OIL LEVEL, Honda Wiring Diagram FS Sound Level Technical DataModel Maximum Vibration Aeq in m/s Maximum Exposure Time Model Blade Size Maximum Blade Cutting DepthModel Nominal Maximum Mass-kg lbs Accessories Husqvarna Construction Products North America Conformity CertificatesConstruction Products, North America Corporate Office Contact Information542 20

FS 520, FS 513, FS 524 specifications

Husqvarna, a renowned name in outdoor power equipment, offers a robust range of walk-behind floor saws designed for professionals and contractors. Among their offerings, the FS 524, FS 513, and FS 520 stand out as exceptional choices, each possessing unique features and technologies that cater to a variety of concrete cutting needs.

The Husqvarna FS 524 is designed for medium-sized jobs and is known for its efficiency and user-friendliness. This model features a powerful engine that delivers consistent performance while minimizing fuel consumption. The FS 524 is equipped with a hand-lever locking for cutting depth, ensuring precision during operation. Its unique design allows for easy transportation and setup, making it ideal for contractors who move between job sites frequently. Moreover, its foldable handlebars enhance compact storage, further improving mobility.

Next in line, the FS 513 is recognized for its compact design and versatility. Engineered for homeowners and small businesses, the FS 513 features a lightweight yet durable construction that doesn't sacrifice performance. With an adjustable depth control and quick-release blade guard, operators can easily change blades and adjust depths without extensive downtime. The robust engine ensures ample power while the vibration-dampening system provides a comfortable experience, reducing operator fatigue over long periods of use.

The FS 520 is a yet more powerful option, suited for larger projects requiring enhanced cutting depth and efficiency. It features the advanced SmartGuard technology, which enhances safety by automatically adjusting the cutting depth based on the blade utilized. The high-performance engine partnered with premium blades allows for deep cuts and efficient material removal, ideal for roadwork and large-scale repairs. The FS 520 also includes a user-friendly control panel that provides easy access to essential functions, ensuring an optimal cutting experience.

All three models utilize Husqvarna’s proprietary technologies, including their state-of-the-art blade cooling system that reduces wear and increases blade life. The ergonomic designs across the FS series help improve operator comfort and control, making these saws suitable for extended periods of use. In summary, the Husqvarna FS 524, FS 513, and FS 520 offer unmatched reliability, performance, and advanced features that empower professionals to tackle concrete cutting projects with confidence and precision.
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