Troubleshooting

6.2 HYDROSTATIC PUMP TROUBLESHOOTING MODELS 72620 & 74824

Symptom

Probable Cause

Suggested Remedy

 

 

 

 

Engine not operating at correct

Repair engine governor

 

speed.

 

 

 

 

 

 

Control linkage damaged or

Repair control linkage.

Will not attain normal feed rate

binding.

 

 

 

 

 

Bypass valve stuck partially

Repair bypass valve. Remove

 

open. (Problem in one direction

 

only.)

foreign material from valve.

 

 

 

 

 

 

Control linkage damaged or not

Repair or reconnect control

 

connected

linkage

 

 

 

Will not feed when control arm

Drive between engine and

Repair drive (replace broken

belt, repair sheared key, repair

is moved

pump damaged

splined coupling, etc.

 

 

 

 

 

 

Pump low on fluid.

Refill reservoir. Purge air from

 

transmission.

 

 

 

 

 

 

Loose belt between engine and

Tension drive belt (replace if

 

pump.

necessary).

 

 

 

 

Pump low on fluid.

Refill reservoir. Purge air from

Feed rate is sluggish under

transmission.

 

 

 

load

Large amount of water in

 

 

Drain fluid from reservoir and

 

hydraulic fluid (evaporates

 

unit, replace filter element, and

 

when hot resulting in low fluid

 

level).

refill with new fluid.

 

 

 

 

 

Hydraulic feed will not pull in

Hydraulic system overloading

Check relief pressure in

system with a pressure gauge

logs over 4" in diameter, or

and causing system to go over

rated to 2500 psi. (System set

continuously stalls or stops

relief.

by factory at 1750 psi.)

 

 

 

 

 

6" & 8" Bear Cat Chipper Operator’s Manual

Page 17

Page 21
Image 21
Hayter Mowers 71620, 74824 manual Hydrostatic Pump Troubleshooting Models 72620

72620, 71620, 74824 specifications

Hayter Mowers is well known for its high-quality garden equipment, particularly its advanced and robust mowers. Among their popular models, the Hayter 74824, 71620, and 72620 stand out, each designed to meet diverse lawn care needs. These mowers showcase innovative technologies and features that enhance performance and user experience.

The Hayter 74824 is renowned for its powerful performance, specifically designed for larger gardens. It is equipped with a robust engine capable of delivering consistent power for various grass types, ensuring efficient mowing even in challenging conditions. Its cutting width of 48 cm allows for faster mowing, while the adjustable cutting heights cater to different grass lengths, accommodating various lawn care preferences. The 74824's unique feature is its variable speed drive, providing operators with optimal control over the mowing pace, making it easier to navigate around obstacles in the garden.

The Hayter 71620 is a more compact model, ideal for medium-sized lawns. It combines ease of use with high efficiency. Featuring a 41 cm cutting deck, this mower offers excellent maneuverability, which is especially useful in smaller areas. The 71620 includes an easy-start engine technology, enabling hassle-free ignition and improved reliability. Additionally, its grass collection system is designed for maximum efficiency, ensuring minimal clippings are left behind to maintain your lawn's aesthetics.

The Hayter 72620 serves as another excellent option for homeowners seeking a reliable mowing solution. Similar in features to the 71620, it offers a slightly wider cutting deck at 46 cm, delivering more coverage while maintaining the same power efficiency. Equipped with a hybrid grass bag that optimizes airflow, the 72620 enhances grass collection effectiveness, promoting a neat finish. Its ergonomic handle design makes it comfortable to operate for extended periods, reducing fatigue for the user.

All these models are built with high-quality materials, ensuring durability and long-lasting performance. Furthermore, Hayter's commitment to environmental sustainability is showcased in these mowers' efficient fuel consumption and reduced emissions, making them an environmentally responsible choice.

In summary, the Hayter 74824, 71620, and 72620 are exemplary choices in lawn care, each model catering to specific needs with innovative features, efficient performance, and user-friendly designs. Whether for expansive lawns or compact gardens, Hayter mowers deliver exceptional results, revolutionizing the way we care for our outdoor spaces.