DISASSEMBLING AND REPAIRING THE PISTON PUMP

C

B

A

Figure 1

1)Remove the cotter pin and pump handle. With the pump facing towards you lay the unit on its back (Figure 1). Loosen the hose clamp and remove the sprayer hose. Caution: There could be residual liquid in the hose and pressure cylinder. Remove the nut and bolt from the protective cap and remove the cap

(ref: fgure 9). Rotate the pump shaft in order to reach two lever bolts(A). Using an allen wrench, remove the lever bolts. Pull the piston assembly (B) out of the piston cylinder (C).

2)Remove the piston cylinder assembly by turning the piston cylinder

counter-clockwise when viewing the sprayer from the bottom. Caution: The piston cylinder may have sharp edges.

Figure 2

Figure 3

Collar

3)Check for vertical scratches on the inside of the piston cylinder and the piston. If one or both are scratched replace them.

4)To replace the collar, push it off of the crown of the piston with your thumb. You will see form fitted slots to install the new collar on to the piston crown.

Figure 4

Piston

Cylinder

Intake

 

Upper

 

Valve

 

Plate

 

Lower

Outlet

Valve Plate

Passage

Figure 5

Pressure cylinder base rib

Piston cylinder tab

Figure 6

5)There are 2 valve plates on the piston cylinder, one on the inside of the cylinder and one on the outside top. The valve plates are held in place with a screw and washer and can be removed and replaced using a

Phillipshead screw driver. The 2 o-rings can be removed and replaced as well. Insure that the o-rings are positioned in the o-ring grooves in the piston cylinder.

6)Grease the 2 O-rings on the piston cylinder (do not get any grease on the valve plate) and screw the piston assembly into the pressure cylinder base. Screw the piston cylinder clockwise until tight and the bottom O-ring is no longer visible. When properly placed, the tab on the piston cylinder will line up with the rib on the pressure cylinder base.

8E

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Echo MS-41BP manual Collar, Disassembling and Repairing the Piston Pump

MS-41BP specifications

The Echo MS-41BP is a powerful and versatile brushless engine chainsaw designed for both professional and residential use. This cutting-edge tool combines robust performance with user-friendly features that cater to both novice and experienced users.

One of the standout features of the MS-41BP is its 41cc engine, which provides a strong output for cutting through various types of wood. The brushless motor technology in this chainsaw enhances efficiency, providing longer run times and requiring less maintenance compared to traditional brushed motors. This makes the MS-41BP not only a reliable option but also a cost-effective one in the long run.

The chainsaw is equipped with a lightweight design that makes it easy to maneuver for extended periods without causing fatigue. Weighing in at just over 10 pounds, the MS-41BP is designed for comfort and reduced vibration, ensuring that users can maintain precision during operation.

Another significant technological advancement is the automatic lubrication system, which keeps the chain and bar adequately lubricated. This feature not only extends the life of the chainsaw but also ensures smoother operation and improved cutting performance. Users can also easily adjust the chain tension, allowing for hassle-free maintenance.

Safety is a top priority with the Echo MS-41BP. It includes an inertia-activated chain brake, which stops the chain in case of kickback, significantly reducing the risk of accidents. The chainsaw also features a protective guard for the front hand, adding another layer of security during use.

The ergonomic handle is designed to enhance grip and control, making it ideal for various cutting tasks, from felling trees to trimming branches. The MS-41BP's low emission engine meets stringent environmental standards, making it a more eco-friendly choice for environmentally conscious users.

In summary, the Echo MS-41BP blends performance, safety, and convenience in one package. Its powerful 41cc brushless engine, user-friendly design, automatic lubrication system, and focus on safety make it a strong contender for anyone in need of a reliable chainsaw. Whether you're a seasoned professional or a weekend warrior, the Echo MS-41BP stands out as a top choice for all your cutting needs.